Visceral Fat and Biological Ageing: New Research Links Deep Belly Fat to Faster Cellular Ageing

Key Takeaways: 

• A study of nearly 4,800 adults aged 45 to 69 from the Busselton Healthy Ageing Study found that higher levels of visceral fat – the fat stored deep within the abdomen – were associated with faster biological and cellular ageing in both men and women.
  
• Among female participants, greater visceral fat was also linked to shorter telomere length, a recognised marker of cellular ageing.
  
• The associations held even after researchers adjusted for overall body fat, body mass index (BMI), waist circumference and lifestyle factors, suggesting visceral fat exerts an effect beyond general measures of body composition.
  
  
  

New research from The University of Western Australia suggests that visceral fat, the type of fat stored deep within the abdominal cavity and wrapped around internal organs, may contribute to faster biological ageing in middle-aged adults independently of overall body weight or general obesity measures. The findings were published in the journal Obesity.

A large population-based analysis

The study was co-authored by Adjunct Associate Professors Jennie Hui and Kun Zhu, both of The University of Western Australia, with the analysis led by Mr Riorden O’Shea, a resident medical officer with the WA Country Health Service. Researchers drew on data from nearly 4,800 participants – 2,614 of them women – aged between 45 and 69 years, all enrolled in the Busselton Healthy Ageing Study.

The team examined how visceral fat related to markers of biological ageing, including indicators of cellular ageing such as telomere length. Telomeres are the repetitive DNA sequences that cap the ends of chromosomes; their progressive shortening over time is widely regarded as a key biological signature of cellular ageing.

The analysis found that greater visceral fat was associated with accelerated biological ageing in both men and women. In women, higher visceral fat was additionally linked to shorter telomere length.

“Our study shows that visceral fat is associated with faster biological and cellular ageing,” said Associate Professor Hui, who is Director of the Busselton Health Study Laboratory. “Understanding what drives faster ageing helps us find better ways to stay healthy for longer.”

An effect that holds after adjusting for other body measures

A central finding of the study is that the link between visceral fat and accelerated ageing persisted even when researchers controlled for other indicators commonly used to assess body composition and adiposity.

“Importantly, these associations remained significant even after accounting for overall body fat, body mass index, waist circumference and lifestyle factors,” Associate Professor Zhu said.

This suggests that visceral fat may have implications for ageing that are not fully captured by routine measures such as BMI or waist circumference – measures that have long been criticised for failing to distinguish between fat stored just under the skin and the metabolically distinct fat located deep within the abdomen.

Why visceral fat behaves differently

Visceral fat is biologically active in ways that subcutaneous fat is not. It secretes inflammatory signalling molecules and contributes to a chronic, low-grade inflammatory state that researchers have increasingly linked to chronic disease and accelerated ageing.

“Visceral fat is metabolically active, secreting a range of pro-inflammatory proteins, which contribute to systemic inflammation and metabolic stress,” Associate Professor Zhu said.

She also noted a practical point that is likely to resonate in clinical settings: visceral fat does not require specialised, costly imaging to assess. “It can be easily measured using imaging technology, which is widely used in routine bone density scans,” she said. This positions visceral fat as a metric that could plausibly be folded into existing clinical workflows without significant additional cost.

The value of long-running cohort data

The findings rest on one of the most established population-health datasets in the world. Established in 1966, the Busselton Health Study is internationally recognised as one of the longest-running population health programmes ever conducted, providing a rich longitudinal dataset that continues to support research into chronic disease and healthy ageing.

Mr O’Shea, who led the analysis, said the project demonstrated the enduring scientific value of sustained cohort studies of this kind. “Access to high-quality longitudinal data allowed us to better understand how clinical risk factors relate to long-term health outcomes,” he said.

Implications for healthier ageing

The findings reinforce a growing body of evidence that abdominal fat distribution – not just total body fat – is an important consideration in healthy ageing. While the study is observational and does not establish that reducing visceral fat will directly slow ageing, the authors argue the results support the case for targeting abdominal fat as part of broader strategies to promote healthier ageing in middle and later life.

For clinicians, the practical takeaway is that visceral fat may warrant attention even in people whose BMI or waist circumference appears unremarkable, and that the imaging tools needed to measure it are already widely available in routine care.

The study, “Visceral fat is associated with accelerated biological and cellular ageing,” is published in Obesity.