4. Genetics: Are You Predisposed to Gain Weight?
While diet and exercise are critical, genetics also play a role in obesity. Some people have a genetic predisposition to gain weight more easily, with certain genes linked to fat storage and slower metabolism. A 2012 study in Nature identified several genes associated with obesity. However, genetics alone doesn’t explain the obesity crisis. It’s the interaction between genetics and environmental factors — like diet and lifestyle — that drives the epidemic.