Losing weight is not just about willpower. New research suggests the brain develops a biological “memory” of a higher body weight, making it harder to maintain weight loss. After dieting, the brain can increase hunger, intensify food cravings, and reduce the body’s energy expenditure in an effort to restore lost fat stores. This evolutionary survival mechanism helps explain why many people regain weight after losing it. Anti-obesity medications such as Wegovy and Mounjaro may help by suppressing appetite signals, but their benefits can diminish once treatment is stopped. These findings highlight the importance of long-term strategies for sustainable weight management.
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