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Why can't I lose belly fat over 40? The real reasons for midlife weight gain

Research from UCLA Health indicates that metabolism naturally slows with age, making it easier to gain weight and harder to lose it after 40. If you're wondering, **why can't I lose belly fat over 40?**, you're facing a common biological reality shaped by hormonal changes, muscle loss, and increased stress levels, all of which require a smarter, more integrated approach than simple dieting.