Obesity Care

New clinic for childhood obesity to open in Surrey, UK

Surrey is set to benefit from a pioneering initiative aimed at combating childhood obesity, as revealed by the BBC. The newly established Complications from Excess Weight (CEW) clinic, a part of Ashford and St Peter’s Hospitals NHS Foundation Trust, is preparing to welcome its first referrals in early autumn, 2024.

This service forms part of a broader national strategy, initiated by NHS England in 2022, to open 30 dedicated clinics across the country. These clinics are designed to offer comprehensive support services, including mental health care and nutritional guidance, to children grappling with obesity.

The teams at these clinics will consist of multidisciplinary professionals such as consultant paediatricians, dietitians, and psychologists, who are committed to a holistic treatment approach for the affected children and their families.

Vicky Williams, the Associate Director of Women and Children’s Services at Surrey Heartlands Integrated Care System, highlighted the urgent need for such services: “Obesity affects one in four children in the UK and it can increase the likelihood of a child developing serious health issues.” She emphasised the importance of early intervention and continuous support to prevent future complications. Williams expressed optimism about the local availability of the service, stating, “It means that, in future, children and young people will be referred to a specialist service in Surrey, closer to home, instead of having to travel further away – so it’s good news for families in Surrey.”

Furthermore, the NHS Frimley Integrated Care Board mentioned that currently, children eligible for the CEW clinic’s services in its area are receiving care from consultants based in Southampton. Plans are underway to establish a similar clinic closer to home for patients from Surrey Heath and Farnham, North East Hampshire, and East Berkshire.

The urgent need for such clinics is underscored by alarming statistics; NHS leaders have noted that obesity impacts one in four children in the UK, potentially leading to severe health problems such as Type 2 diabetes, liver disorders, and early onset heart disease. Data from the latest child measurement programme in schools indicates that nearly 13% of children assessed in Surrey during the 2022/23 school year were living with obesity by the time they reached year six of primary school.

Previous governmental measures include the 2018 imposition of a tax on high-sugar soft drinks and limitations on the promotion of unhealthy products in supermarkets across England.

The new Labour government has expressed a firm commitment to addressing this health crisis. A Department for Health and Social Care spokesperson detailed forthcoming measures: “We will introduce tight restrictions on advertising junk food, alongside banning children from being able to purchase sugary, high caffeine energy drinks. By building a healthier society, we will help to build a healthy economy.” This statement underscores the government’s proactive stance on cultivating a healthier future for the next generation.

Examining the impact of excess weight on semen quality

A recent systematic review and meta-analysis published in the International Journal of Obesity, conducted by researchers in China, has revealed the profound impacts of obesity and overweight on male fertility. This study delves into the association between Body Mass Index (BMI) and semen quality, indicating significant adverse effects, particularly in men with more severe levels of obesity. 

Approximately 15% of couples of reproductive age worldwide face infertility issues, with male factors, notably poor semen quality, contributing to 20–70% of these cases. Over recent decades, a marked decline in semen quality has been noted globally. For instance, significant decreases in total sperm count and sperm concentration were observed from 1973 to 2011 in Western nations, and from 1981 to 2019 in China. This decline is influenced by various factors including age, lifestyle, and environmental conditions. An increase in abnormal BMI has been pinpointed as a potential risk factor amidst these changes. Previous studies have linked obesity to reductions in semen quality, but results have varied due to differences in BMI classifications and other methodological limitations.

To address these inconsistencies and provide clearer insights, the researchers included data from 50 human studies, involving a total of 71,337 men aged between 26 and 44 years. These studies were sourced from Embase, PubMed, and Web of Science and categorised men based on their BMI: under 25.0 kg/m² as the reference group, 25.0–29.9 kg/m² as overweight, and over 30.0 kg/m² as having obesity. The studies examined various semen parameters such as volume, sperm concentration, motility, total sperm count, and morphology. Men were also categorised based on their fertility status into general, infertile or sub-fertile, and suspiciously sub-fertile groups.

The analysis, employing statistical tools like the random effects model, Cochran’s Q tests, and I² statistics, demonstrated that obesity was associated with significant reductions in several key semen parameters. Men with obesity, for instance, showed reductions of 0.24 ml in semen volume, 19.56 × 10⁶ in total sperm number, and decreases in both total and progressive motility. Men with overweight experienced milder declines, which were not as widespread across different semen parameters.

The study also highlighted that the detrimental effects of obesity on semen quality varied across different global regions, including America, Asia, and Europe, suggesting regional differences in lifestyle and environmental factors could influence the degree of impact. Furthermore, the findings were consistent across different methods of semen assessment, reinforcing the robustness of the results.

Despite its strengths, such as a large sample size and unified BMI classifications, the study faced limitations related to potential inaccuracies in aggregated data and the BMI’s inability to distinguish between muscle and fat mass. Additionally, the traditional semen parameters used might not fully reflect the functional capacity of sperm.

In conclusion, the analysis confirmed a significant association between higher BMI and poorer semen quality, with more severe impacts observed in men with higher obesity classes. These findings emphasise the importance of maintaining a healthy weight to support male reproductive health and suggest that future studies should explore broader reproductive implications of obesity using more comprehensive indicators of sperm health and function.

Nutritional studies highlight pulses as key to lowering diabetes and cholesterol risks

Research consistently highlights pulses—such as beans, peas, lentils, and chickpeas—as crucial allies in the fight against diabetes and elevated cholesterol levels. This insight comes at a critical time, as projections from a study published in The Lancet last year forecast that diabetes could affect over 1.31 billion people globally by 2050. Concurrently, elevated cholesterol levels remain a significant health issue, with nearly half of adults in the UK exceeding national guidelines.

A detailed review in the journal Nutrients has shown that regular consumption of pulses can significantly improve these concerning health trends. The review meticulously examined thirty studies that looked at various types of pulses, including lentils, chickpeas, and several common beans like pinto, black, and kidney beans. The studies covered a wide array of health outcomes, from lipid profiles and blood pressure to risks of cardiovascular diseases and diabetes management.

The findings from these studies are telling. They specifically note improvements in low-density lipoprotein (LDL) and high-density lipoprotein (HDL) cholesterol, systolic and diastolic blood pressure, fasting blood sugar, haemoglobin A1c levels, waist circumference, and markers of inflammation and sensitivity such as C-reactive protein. These outcomes particularly underscore the potential of pulses to enhance lipid profiles and manage blood pressure.

The review emphasised that interventional studies, which typically have larger sample sizes and provide robust data, consistently confirm the health benefits of pulses. These studies often involved dietary adjustments where pulses replaced red meat or were added to diets as fixed servings. The results repeatedly demonstrated improvements in dietary quality and beneficial health outcomes.

Pulses’ potential to prevent heart disease is particularly noteworthy, largely due to their ability to lower total and LDL cholesterol levels. The authors of the review highlight that pulses are low in fat and rich in healthy mono- and polyunsaturated fats, essential micronutrients, and bioactive compounds with antioxidant properties, making them a true “nutritional powerhouse.”

Longitudinal studies also link higher pulse consumption with reduced risks of developing type 2 diabetes. This association is bolstered by interventional studies that document notable improvements in fasting glucose levels and insulin sensitivity with increased pulse intake. Consequently, pulses are not only pivotal in preventing diabetes but also in managing blood glucose levels effectively.

Tim McGreevy, CEO of USA Pulses, commented on the research, stating, “This research accentuates the fact that pulses are beneficial for health in so many ways, underscoring dietary guidelines that endorse plant-based eating patterns,” even though he was not directly involved in the study.

Additionally, awareness about type 2 diabetes is critical as many individuals may be unknowingly afflicted. Symptoms to watch for include increased urination, persistent thirst, excessive tiredness, unexplained weight loss, genital itching or recurrent thrush, delayed healing of wounds, and blurred vision. Recognising these signs can prompt earlier intervention and management of the condition, further reducing long-term health risks.

Lifestyle changes in mothers with obesity could mitigate heart risks in offspring

Researchers at King’s College London have discovered that lifestyle modifications could potentially reduce the risk of children developing certain cardiovascular diseases, which are believed to stem from maternal obesity and related foetal heart abnormalities.

Globally, obesity rates among pregnant women are on the rise, with more than half of the women attending antenatal clinics in England and Wales either having overweight (28.5%) or obesity (22.7%). Studies have increasingly shown that obesity during pregnancy can precipitate cardiovascular complications and disrupt normal cardiac development in the offspring.

The findings were detailed in a recent publication in the International Journal of Obesity, led by Dr Samuel Burden. The research team conducted a systematic review of existing studies to explore whether interventions targeting obesity in pregnant women—through diet, exercise, and other physical activities—can foster cardiac health in their children.

The selection criteria for the studies included randomised trials focusing on lifestyle changes among pregnant women diagnosed with obesity. The evidence reviewed indicated that such interventions could avert atypical cardiac development in children, highlighting several benefits commonly associated with improved heart health, such as decreased thickening of the heart walls, maintaining normal heart weight, and reducing the likelihood of increased heart rates.

Dr Samuel Burden commented, “We and others have demonstrated that maternal obesity correlates with signs of poor heart development in children. Our review of existing literature on dietary and exercise interventions in women with obesity, either before or during pregnancy, revealed that these measures indeed offer a protective shield against the extent of this unhealthy heart development in children. Should these results hold into adulthood, these interventions could shield against the detrimental cardiovascular conditions seen in adult children of mothers with obesity, thus guiding public health strategies to enhance cardiovascular health for future generations.”

Although the data supports the premise that lifestyle adjustments in pregnant women with obesity may safeguard infant cardiovascular health, further comprehensive studies are necessary. These should involve larger cohorts and extend into later childhood to affirm the findings and assess if the benefits continue into adulthood.

Should future research corroborate these findings, the implications could be significant, potentially shaping public health initiatives aimed at improving heart health across generations.

Beyond BMI: A new framework for diagnosing obesity with a focus on overall health

The traditional method of diagnosing and managing obesity, which heavily relies on body mass index (BMI), is increasingly seen as inadequate. Acknowledging this, the European Association for the Study of Obesity (EASO) has introduced a comprehensive new framework for diagnosing, staging, and managing adult obesity. Detailed in a recent publication in Nature Medicine, this framework aims to incorporate the latest scientific insights and advancements, including novel obesity medications, to ensure more effective and inclusive treatment strategies.

Obesity is widely recognised as a multifactorial, chronic, relapsing, non-communicable disease characterised by an abnormal and/or excessive accumulation of body fat. Traditionally, the diagnosis has been predominantly based on BMI cut-off values. This method fails to consider critical factors such as the distribution and functional roles of adipose tissue in the disease’s severity.

The EASO Steering Group, comprising current and former association presidents among other experts, has crafted a series of statements that update the obesity management approach to reflect the latest scientific knowledge. A key update in this new framework is the revised approach to the anthropometric component of obesity diagnosis. The authors explain, “An important novelty of our framework regards the anthropometric component of the diagnosis. The basis for this change is the recognition that BMI alone is insufficient as a diagnostic criterion, and that body fat distribution has a substantial effect on health.” They specifically highlight the health risks associated with the accumulation of abdominal fat, noting its association with an increased risk of cardiometabolic complications and its significance as a determinant of disease, even in individuals with a BMI below traditional obesity thresholds.

The new framework underscores the importance of considering abdominal (visceral) fat accumulation as a critical health risk factor, even in individuals with lower BMI (≥25–30 kg/m^2) who exhibit significant abdominal fat but may lack overt clinical symptoms. This broader definition aims to reduce the risk of undertreating these individuals compared to the current BMI-based criteria.

Treatment recommendations within the framework align with existing guidelines but emphasise behavioural changes such as dietary adjustments, increased physical activity, stress management, and improved sleep quality. Psychological therapy, obesity medications, and metabolic or bariatric procedures are also considered crucial, depending on individual needs.

The steering committee has pointed out that the traditional reliance on BMI cut-offs in clinical trials and guidelines often excludes individuals who, despite having a lower BMI, carry a significant obesity-related health burden. The committee suggests a shift towards including patients with a BMI of at least 25 kg/m^2 and a waist-to-height ratio above 0.5, who also exhibit medical, functional, or psychological impairments, in obesity medication and treatment programmes.

The authors make a call to action to pharmaceutical companies and regulatory bodies: “This statement may also be seen as a call to pharmacological companies and regulatory authorities to use inclusion criteria that are more adherent to the clinical staging of obesity and less to traditional BMI cut-offs when designing future clinical trials with obesity medications.”

In conclusion, the authors advocate for a paradigm shift in obesity management, likening it to the management of other chronic non-communicable diseases. They emphasise the importance of defining long-term, personalised therapeutic goals from the outset of treatment, considering the disease’s stage and severity, therapeutic options, side effects, patient preferences, and individual challenges. They stress the necessity for a comprehensive, life-long treatment plan over mere short-term weight reduction, stating, “Emphasis on the need for a long-term or life-long comprehensive treatment plan rather than short-term body weight reduction is warranted.”

Research highlights how lifestyle can overcome genetic obesity risks

A groundbreaking study published in “Cell Metabolism” has illuminated the powerful role of lifestyle modifications in mitigating the genetic predisposition to obesity, revealing new avenues for managing this global health challenge.

Obesity has reached pandemic proportions, exacerbated by inactive lifestyles and the consumption of high-calorie diets. The condition is influenced by both heritable and polygenic factors, with numerous metabolic pathways and over a thousand genetic variants playing roles. Traditionally, it was assumed that one’s genetic risk for obesity was unalterable.

Recent gene-environment studies have hinted that certain lifestyle choices might lessen the influence of specific genes linked to obesity. These studies, however, typically focused only on limited genes and lifestyle factors, leaving a gap in understanding the broader interaction between lifestyle habits and genetic predispositions.

This latest research delved into whether lifestyle changes could indeed counteract genetic risks. The study cohort included 338,600 white British participants from the UK Biobank, refined to 337,554 after excluding those lacking essential data. Researchers calculated a polygenic score (PGS) from a genome-wide association study on body mass index (BMI) specific to individuals of European descent. They also developed a healthy lifestyle score based on five factors: alcohol consumption, sleep duration, sedentary behaviour, diet, and physical activity. The study’s primary focus was on new obesity cases, with existing obesity cases as a secondary focus.

The researchers predicted absolute risks using odds ratios (ORs) and hazard ratios (HRs) for both new and existing obesity, relative to PGS percentile and lifestyle factors. These ratios were derived from Cox proportional hazard and logistic regression models. They also calculated the probability of developing obesity by age 75 and identified new obesity-related morbidities (ORMs) from various health data sources.

Analyses showed that high genetic risk and unhealthy lifestyle habits were each linked to higher obesity risks, both independently and combined. The risk was most pronounced in those with both high genetic predisposition and poor lifestyle habits, with a HR of 3.54 compared to those with low genetic risk and healthy lifestyles.

Interestingly, the median likelihood of obesity by age 75 varied significantly with lifestyle: 2.8% in those with poor lifestyles versus 1.7% in those with healthier choices. This pattern was echoed in the analysis of existing obesity cases.

The study also found significant additive interactions between lifestyle and genetic risk in terms of obesity incidence, with consistent results from multiplicative interaction analysis. Importantly, sedentary behaviour was linked to the highest obesity risk, regardless of genetic background. Conversely, individuals with high genetic risk but who maintained healthy lifestyles had similar ORMs to those with lower genetic risk.

Overall, the study underscores the profound impact of healthy lifestyle choices in reducing the risk of obesity and its related health issues, even among those with a high genetic predisposition. These findings advocate for the promotion of active, health-conscious behaviours across all genetic backgrounds as a critical strategy in combating obesity.

This research not only challenges the fatalistic view of genetic determinism but also highlights the empowering role of personal lifestyle choices in managing one’s health.

New research highlights the obesity-fighting properties of the ketogenic diet

A groundbreaking study recently published in Nature Metabolism has uncovered the protective effects of bile acids (BAs) induced by the ketogenic diet (KD) in the fight against obesity.

Obesity is linked to a myriad of health issues including cardiovascular diseases, cancer, diabetes, and non-alcoholic fatty liver disease. These associations underscore the urgent need for effective treatments to alleviate its extensive health impacts.

The ketogenic diet, recognised for its distinctive metabolic effects, has been proven beneficial in managing refractory epilepsy and other health disorders. Research indicates that changes in gut microbiota and metabolites might play a role in the diet’s protective properties against intestinal inflammation and seizures.

Although it’s clear that gut microbiota and metabolites are pivotal in the metabolic transformations elicited by KD in both rodents and humans, the specific microbes and metabolites responsible remain unidentified.

In the referenced study, the efficacy of KD in obesity prevention was demonstrated through an experimental setup involving mice. These mice were fed either a standard chow diet (CD) or a KD for seven weeks. Results indicated significant reductions in fasting glucose levels and body weight in those on KD. Metabolomics analysis further identified shifts in the metabolic profiles of the KD group, with increases in 22 metabolites and decreases in 18.

A subsequent experiment involved feeding mice with CD, KD, or a methionine-supplemented version of KD (KDM) over seven weeks. The addition of methionine to KD reversed the diet’s reductions in glucose levels and body weight and decreased six taurine-conjugated bile acids in serum. KD alone reduced levels of certain unconjugated BAs, which were restored by KDM.

When gut microbiota were depleted, differences in body weight and glucose levels between KD and KDM groups vanished, highlighting the role of microbiota in these effects. Faecal microbiota transplantation (FMT) from KD-fed to CD-fed mice resulted in weight loss and enhanced glucose tolerance. Conversely, FMT from KDM mice had no significant impact.

Further analyses showed that KD reduced the alpha diversity of gut microbiota, a change reversed by KDM. This diet also affected specific bacterial strains, which were restored by KDM supplementation. Studies on energy absorption revealed that KD-fed mice exhibited higher faecal energy content, suggesting a reduction in calorie absorption.

RNA sequencing of ileal tissues indicated that treatment with specific bile acids (TUDCA or TDCA) downregulated CAR1, a gene associated with obesity. These treatments also diminished lipid accumulation in cells, facilitated weight loss, and decreased intestinal lipid absorption in mice.

In models of diabetes and obesity, treatments with TUDCA and TDCA resulted in weight reduction, lower fasting glucose levels, improved glucose tolerance, and decreased liver fat. Human studies paralleled these findings, showing that lower plasma levels of certain conjugated BAs were associated with higher body mass index and fasting glucose levels.

In conclusion, this study illuminates the potential of the ketogenic diet and targeted bile acid treatments in managing obesity and improving metabolic health through modifications in gut microbiota and metabolic processes.

The findings highlight critical host-gut microbiota interactions and support the use of TUDCA and TDCA as potential therapeutic agents for tackling obesity and its associated complications.

Natural compound found in olives shown to lower blood sugar and aid weight loss, mouse study shows

A novel study conducted using mice models has highlighted the potential of elenolic acid, a natural compound extracted from olives, in mitigating obesity and type 2 diabetes. This groundbreaking research suggests that elenolic acid could serve as a basis for the development of affordable, safe natural products aimed at managing these prevalent health issues.

In a series of experiments, diabetic mice with obesity administered with elenolic acid orally displayed a significant reduction in body weight and enhanced glucose regulation within just one week. These results were noteworthy when compared to a control group of mice with obesity that did not receive the treatment. Remarkably, the glucose-lowering impact of elenolic acid was on par with liraglutide, an injectable diabetes medication, and surpassed the effectiveness of metformin, a commonly used oral diabetes drug.

Professor Dongmin Liu, the lead researcher and a professor at the Department of Human Nutrition, Foods and Exercise at Virginia Tech, explained the motivation behind their focus on natural compounds. “Lifestyle modifications and public health measures have had limited impact on the rising prevalence of obesity, one of the top risk factors for type 2 diabetes. Available obesity drugs are ineffective in weight loss maintenance, expensive and/or carry potential long-term safety risks. Our goal was to develop safer, cheaper and more convenient multi-targeting agents that can prevent the occurrence of metabolic disorders and type 2 diabetes,” stated Liu.

The research findings will be presented by Dr. Hana Alkhalidy, a scientist in Liu’s laboratory, at NUTRITION 2024, the premier annual event of the American Society for Nutrition.

The team at Virginia Tech has previously investigated various natural compounds targeting molecular aspects of metabolism in critical body parts like the pancreas, muscle, fat tissues, and liver. Their latest strategy focuses on stimulating hormone secretion in the gut, a method that could indirectly improve metabolic functions due to natural products’ generally poor bioavailability.

Their screening identified that elenolic acid, found abundantly in mature olives and extra virgin olive oil, stimulates the release of metabolic hormones GLP-1 and PYY in the gut. These hormones are integral during meals, enhancing satiety and regulating blood sugar and metabolism. The researchers synthesized elenolic acid from its precursor, oleuropein, which proved to be a cost-effective method compared to direct extraction from olives.

Further testing revealed that diabetic mice with obesity treated with elenolic acid for four to five weeks showed a 10.7% reduction in obesity and exhibited glucose levels and insulin sensitivity comparable to healthy, lean mice. Additionally, the treatment significantly curbed food intake and fostered weight loss, effects associated with increased levels of PYY and GLP-1 and decreased expression of agouti-related peptide, a hypothalamic peptide that promotes overeating and weight gain when overexpressed.

“Overall, the study showed that elenolic acid from olives has promising effects on hormone release and metabolic health, particularly in obese and diabetic conditions,” Liu remarked. He noted that the compound mimics the physiological conditions of eating to enhance gut metabolic hormone secretion, thereby helping to regulate energy balance and metabolic health.

Despite these promising results, the researchers cautioned that the concentration of elenolic acid in typical olive products is quite low, implying that the health benefits observed in the study are unlikely to be replicated through consumption of olives and olive oil alone.

The research team is now focused on elucidating the metabolic pathway of elenolic acid, from its absorption to its excretion. This exploration will provide further insights into the compound’s efficacy and safety, paving the way for potential clinical trials.

Findings suggest exposure to greenspace Is linked to lower risk of obesity-related cancer

A comprehensive study led by the University of Queensland has established a connection between regular exposure to greenspace and a decreased risk of obesity-related cancers. This pivotal research, spearheaded by PhD candidate Chinonso Odebeatu from the university’s School of Public Health, involved an extensive analysis of data pertaining to nearly 280,000 individuals, aged between 37 and 73, residing in England, Scotland, and Wales, who were recruited from 2006 to 2010.

“The large-scale biomedical database, Biobank UK, was utilised for the study, and we determined the greenspace around participants’ homes using the Ordnance Survey MasterMap Greenspace dataset,” explained Mr. Odebeatu. He further elaborated on the intent behind the study: “Our focus was on how greenspace might affect specific health outcomes, which led us to link the data to the UK’s National Cancer Registry.”

The findings were significant. Of the 279,000 participants, nearly 10,000 developed obesity-related cancers over an eight-year follow-up period. Mr. Odebeatu noted, “When we examined the type and quantity of greenspace around the participants, we discovered that exposure to a private residential garden was associated with a reduced risk of developing cancers, notably breast and uterine cancer.”

The study suggests that having greenspace nearby encourages physical activity, increases opportunities for Vitamin D synthesis, and might even mitigate the effects of air pollution. Mr. Odebeatu pointed out that the health benefits of access to a household garden were more pronounced among specific groups, including women, non-smokers, and individuals who abstain from alcohol.

“It was also more beneficial for individuals who were physically active, those without cardiovascular issues, and those not suffering from vitamin D deficiencies,” he added.

Associate Professor Nicholas Osborne, also from the University of Queensland’s School of Public Health, emphasised the broader implications of these findings. “These results support policies and initiatives that aim to increase people’s access to greenspace. We know living in areas with abundant greenspace can positively impact both physical and mental health and well-being,” Dr. Osborne stated.

He suggested that the study not only deepens understanding of the health benefits of greenspace but also underscores the importance of community gardens for those without access to private gardens. “Encouraging outdoor activities and ensuring adequate vitamin D levels could further amplify these benefits,” Dr. Osborne concluded.

This groundbreaking research was published in the journal Science of The Total Environment, highlighting the potential of greenspaces in combating obesity-related cancers and enhancing public health.

Nuts can aid in weight loss efforts, research shows

Nuts, often enjoyed as a topping on morning cereal or as a mid-afternoon nibble, may play a pivotal role in effective weight management strategies, according to new research findings.

A study conducted by the University of South Australia has found that nuts can be a beneficial component of calorie-restricted diets aimed at weight loss. The research, which synthesised data from seven randomised controlled trials, assessed the impact of nut inclusion on weight loss and glycemic control within energy-restricted (ER) diets. The findings indicated that including nuts did not negatively affect weight loss outcomes; on the contrary, it may enhance them.

The analysis revealed that in four out of the seven studies, participants who incorporated between 42 to 84 grams of nuts daily into their ER diets experienced significantly greater weight loss—ranging from an additional 1.4 to 7.4 kilograms—compared to those on similar diets without nuts. This weight loss benefit is thought to stem from nuts’ ability to effectively suppress appetite.

In instances where no discernible difference in weight loss was observed between nut-enriched and nut-free diets, the quantity of nuts included in the diets was generally lower.

This research arrives amidst concerning statistics from the Australian Bureau of Statistics, which indicate that 67% of Australian adults are either overweight or obese. Thus, the study’s insights are particularly timely and relevant.

Professor Alison Coates from UniSA highlighted the nutritional value of nuts, advocating for their inclusion in weight-loss diets. “Many people shun nuts in their diet due to the misconception that their high energy and fat content contribute to weight gain,” Professor Coates explained. However, she clarified that nuts are abundant in healthy unsaturated fats, plant proteins, and dietary fibre, all of which aid in promoting fullness and reducing overeating. She also noted nuts’ association with improved cardiovascular health, better gut health, and enhanced cognitive function.

Despite these benefits, it appears that nut consumption among Australians is less than ideal, with 60% of the population reporting they do not consume any nuts at all.

Professor Coates reassured that, contrary to common fears, nuts do not promote weight gain. “If concerns about weight gain have been deterring people from consuming nuts, they need not worry. Nuts do not lead to weight gain and seem to actually support weight loss efforts,” she asserted.

Dr Sharayah Carter, a co-author of the study, also celebrated the findings. She emphasised the unique flavour and texture profile of nuts, which make them an integral part of many diets, and highlighted their convenience as a healthy snack option. “For those who enjoy nuts, it is heartening to know that they can contribute to achieving weight-loss objectives while also enhancing overall health,” Dr Carter said. She added that health professionals should feel confident in recommending nuts as part of a healthy diet, with no adverse effects on weight management.

This study underscores the role of nuts as a beneficial addition to weight loss diets, helping to debunk myths about their dietary impact while promoting their numerous health advantages.

Evening workouts best for lowering blood sugar in adults with overweight and obesity

Recent investigations have shown that exercising in the evening can significantly decrease daily blood sugar levels in inactive adults who have overweight or obesity. This finding was reported in a study published in the journal Obesity, the flagship publication of The Obesity Society (TOS).

The study reveals that while the benefits of moderate to vigorous physical activity on glucose homeostasis are well acknowledged for adults at increased risk of insulin resistance, the specific timing that maximises these benefits had not been determined until now.

Professor Jonatan R. Ruiz of the University of Granada, who specialises in physical activity and health within the Faculty of Sport Sciences-Sport and Health University Research Institute (iMUDS), underscored the significance of timing in exercise routines. “Our results highlight the importance of the field of precision exercise prescription. In clinical practice, certified sports and medical personnel should consider the optimal timing of the day to enhance the effectiveness of the exercise and physical activity programmes they prescribe,” stated Ruiz. He led the research alongside predoctoral researcher Antonio Clavero-Jimeno.

The research utilised baseline data from a multi-centre randomised controlled trial carried out in Granada and Pamplona, Spain. The study aimed to examine the impact of time-restricted eating on visceral adipose tissue, body composition, and cardiometabolic risk factors among adults with obesity and overweight.

Involving 186 participants with an average age of 46 years and a body mass index of 32.9 kg/m2, the study monitored physical activity and glucose levels simultaneously over a 14-day period. This was achieved using a triaxial accelerometer and a continuous glucose-monitoring device.

Researchers categorised the volume of physical activity into periods: morning, afternoon, and evening. Activities were assigned to a period if over 50% of exercise was done within those times, with evening defined as 6 p.m. to midnight.

The findings indicated that engaging in more than 50% of daily moderate to vigorous physical activity in the evening led to lower glucose levels throughout the day and night, and these benefits were particularly pronounced in individuals with impaired glucose regulation. This pattern was consistent across both genders.

Renee J. Rogers, PhD, a senior scientist at the University of Kansas Medical Center, highlighted the implications for tailored exercise advice. “As the field moves towards individualised exercise prescriptions for different chronic conditions, this study now provides additional insights beyond just telling patients to ‘move more,’ but instead to move as often as possible and to prioritise afternoon-to-evening movement when feasible for glucose regulation,” said Rogers, who was not involved in the study.

The study also featured contributions from Manuel Dote-Montero, Jairo H. Migueles, Alba Camacho-Cardenosa from the University of Granada; Maddi Oses, Jon Echarte Medina, Juan M.A. Alcantara, Idoia Labayen from the Public University of Navarre and the Navarra Institute for Health Research (ldiSNA), and Manuel Muñoz-Torres from ibs.GRANADA and the University Hospital San Cecilio Clinic.

In-depth study unveils complex impact of obesity and metabolic syndrome on breast cancer risk

Recent research led by a University of Oklahoma academic has identified nuanced relationships between obesity, metabolic syndrome, and breast cancer risks, potentially guiding better preventative strategies for at-risk patients. The comprehensive findings stem from the Women’s Health Initiative (WHI), an extensive study initiated in the early 1990s focused on postmenopausal women’s health issues, including cancer, cardiovascular diseases, and osteoporosis.

Robert Wild, M.D., Ph.D., a professor of obstetrics and gynaecology at the OU College of Medicine, and a longstanding contributor to the WHI, co-authored this pivotal study published in the journal Cancer of the American Cancer Society. This investigation is part of a series of outputs from the WHI, which remains the largest preventative health study on women. It builds on previous research which demonstrated that a low-fat diet could reduce breast cancer mortality by 21% over two decades, prompting further exploration into whether this benefit was due to reduced obesity levels or amelioration of metabolic syndrome symptoms.

Dr. Wild elaborated on the study’s findings, stating, “This study shows that obesity had an effect on breast cancer independent of metabolic syndrome, and that metabolic syndrome had an effect on breast cancer independent of obesity. And they affected various subtypes in different ways, which influenced whether women were diagnosed with breast cancer and whether they died from it.”

The study’s insights are multifaceted: it confirms the importance of managing both body weight and metabolic health to mitigate breast cancer risks. Dr. Wild emphasised the foundational health practices, remarking, “This study is essentially saying to get back to the basics. Prevention is important, and we need to be paying attention to both metabolic syndrome and weight.” Metabolic syndrome comprises a cluster of conditions—elevated blood pressure, high blood sugar, excess abdominal fat, and abnormal cholesterol or triglyceride levels—all of which also heighten the risk of cardiovascular disease and diabetes.

In more detailed findings, the study reported:

• Metabolic syndrome is significantly associated with a 53% increase in deaths post-breast cancer diagnosis and a 44% rise in breast cancer mortality rates.
• The syndrome adversely affects prognosis specifically in cases of oestrogen receptor (ER)-positive and progesterone receptor (PR)-negative breast cancers.
• ER-positive cancers, which constitute 70-80% of all breast cancer cases, are typically hormone-dependent for growth and generally respond to hormone therapy.
• Conversely, PR-negative cancers lack hormone receptors, do not benefit from hormone therapies, and often exhibit faster growth compared to hormone-positive cancers.
  

The research also highlighted obesity’s impact, noting a higher incidence of breast cancer and mortality rates particularly among women with severe obesity. However, obesity showed a correlation with better outcomes in ER-positive and PR-positive cancers, which are treatable with hormone therapy and generally have a slower growth rate.

Dr. Wild reflected on the lasting value of the WHI data, saying, “The Women’s Health Initiative is the gift that keeps on giving. It is a great opportunity to make use of quality information. In the beginning, I don’t think we knew what a valuable resource it would still be years later.”

This study not only underscores the complex interactions between obesity, metabolic syndrome, and breast cancer but also reinforces the critical need for integrated health strategies to address these risks comprehensively.