Lund Study Links Adult Weight Gain to 5-Fold Cancer Risk in 600,000 People
Updated
Updated · The Guardian · May 13
Lund Study Links Adult Weight Gain to 5-Fold Cancer Risk in 600,000 People
3 articles · Updated · The Guardian · May 13
More than 600,000 Swedes tracked from ages 17 to 60 showed no safe age for gaining excess weight, with heavier early-adult weight and later weight gain both tied to higher overall and site-specific cancer risk.
Men who became obese before 30 faced a fivefold higher liver-cancer risk, while women obese before 30 had a 4.5-fold higher endometrial-cancer risk; pancreatic, kidney and colon cancer risks also rose sharply.
The biggest gainers—about 32 kg versus 8 kg for the least—were 7% more likely to develop cancer overall, with men nearly tripling liver-cancer risk and women nearly quadrupling endometrial-cancer risk.
Researchers said earlier weight gain may give inflammation and elevated insulin more time to damage susceptible tissues, while later-life gains showed sex-specific patterns tied to hormone-related cancers in women and oesophageal and liver cancers in men.
Cancer Research UK said the findings strengthen the case for obesity curbs, calling for tighter junk-food advertising limits, mandatory healthy-food sales reporting and better access to nutritious food.
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Early Adulthood Weight Gain Increases Premature Mortality by 70%: Insights from the 2026 Lund University Study
Overview
The 2026 Lund University study, published in eClinicalMedicine, highlights that even small, gradual weight gains in early adulthood can have a major impact on long-term health. By using repeated, objective weight measurements collected over many years in clinical settings, the researchers showed that the timing of weight gain is crucial. Healthy habits formed during early adulthood can make a lasting difference, while early weight gain increases the risk of serious health problems later in life. The study’s strong methodology allowed for more precise conclusions about how long-term weight changes affect health outcomes.