Early obesity raises premature death risk 70%
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- Lund University conducted a pooled cohort study (ODDS) tracking weight trajectories of more than 620,000 individuals from age 17 to 60, with at least three measured weight points per participant.
- Early adulthood obesity (BMI ≥ 30 before age 30) was linked to roughly a 70 % higher overall mortality risk compared with those who remained non‑obese until age 60.
- Weight gain of 0.4 kg per year between ages 17 and 30 (≈6.5 kg total) corresponded to an about 17 % higher risk of premature death relative to stable weight.
- Cardiovascular disease, type 2 diabetes, hypertension and fatty liver disease showed increased mortality risk proportional to the speed and duration of weight gain, confirming the dose‑response pattern.
- Women’s cancer mortality did not vary with the age at which weight was gained, suggesting hormonal or other biological mechanisms may drive risk independently of obesity timing.
- Tanja Stocks and Huyen Le emphasized that the study’s reliance on objectively measured weights, rather than self‑reported recall, strengthens the robustness of these findings and underscores the need for early obesity prevention policies.
Why it matters: Policymakers and public‑health officials should prioritize early‑life obesity prevention, as the study shows that each kilogram of weight gained before age 30 translates into markedly higher premature‑death risk for millions, while the unexpected cancer‑risk pattern in women signals a need for gender‑specific research.
