Japan’s healthcare system to include new obesity treatment in insurance coverage
Japan’s healthcare system is set to introduce a novel obesity treatment covered by public medical insurance starting Wednesday (22nd of November, 2023), marking the first such inclusion in thirty years. Wegovy, produced by the Danish firm Novo Nordisk, will be accessible under the national health insurance following its approval for manufacture and sale in March.
The treatment contains semaglutide, a GLP-1 receptor agonist that not only enhances insulin production and lowers blood sugar but also suppresses appetite by inducing satiety and curbing cravings.
Coverage is specifically tailored for patients who are significantly overweight or have weight-related health complications such as high blood pressure, hyperlipidemia, and Type 2 diabetes, and who have not seen results from lifestyle changes alone. Criteria for eligibility include having a Body Mass Index (BMI) of 35 or above, or a BMI of 27 with associated comorbidities.
Wegovy is administered weekly through self-injection, with a monthly supply consisting of four pens. The cost varies according to the dose, from ¥1,876 (£9.99) for the smallest dose to ¥10,740 (£57.19) for the highest.
The drug joins Ozempic, also a GLP-1 receptor agonist with semaglutide by Novo Nordisk, on the market. While Ozempic targets Type 2 diabetes at lower doses, Wegovy is dosed higher specifically for weight loss.
Despite its medical purposes, there’s growing concern over Wegovy’s use for aesthetic weight loss, leading to potential drug shortages for those in medical need. This has prompted Japanese medical bodies to warn against such misuse, especially with the trend of “medical diets” offered by clinics to individuals without obesity or diabetes.
Research has pointed out the risk of severe gastrointestinal issues with these medications, a concern highlighted in the Journal of the American Medical Association. Yet, Novo Nordisk has cited an August report claiming Wegovy can cut the risk of major adverse cardiovascular events by 20% in adult individuals with overweight or obesity.
Previously, Japan’s insured treatment for obesity was limited to Mazindol, introduced in 1992, designated for severe obesity and capped at three months of use due to addiction risks.
