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This DNA test can predict if a 5-year-old will be obese as an adult

What if we could predict obesity before it ever takes hold? A global team has created a genetic test that forecasts a child’s risk of adult obesity before age five—years before other factors kick in. By analyzing data from over five million people, their polygenic risk score doubles the predictive power of previous tools. While genetics isn’t destiny, those with higher genetic risk respond better to weight loss interventions but may regain weight quickly. The tool isn’t perfect, it performs far better in people of European ancestry, but it’s a game-changer in early prevention.

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