Fat Cells Retain 'Obesity Memory': Study

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22 Nov 2024

Researchers from ETH Zurich discovered fat cells retain an epigenetic memory of obesity after weight loss


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This memory, termed "obesogenic memory," makes previously obese mice regain weight faster on high-fat diets


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Obesogenic memory involves epigenetic changes that affect gene activity, influencing weight rebound tendencies in individuals


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Genes linked to inflammation are more active, while fat cell identity genes show reduced activity


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Similar epigenetic signatures were observed in humans who had weight loss surgeries, limiting full causal analysis


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This phenomenon explains the "yo-yo" effect of weight gain after successful dieting or medication


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Researchers suggest targeting these epigenetic changes could improve long-term weight loss and health outcomes


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Obesity remains a global health crisis, associated with millions of deaths annually, mostly from heart disease


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Factors like microbiomes, medications, genetics, and now epigenetics contribute to difficulties in maintaining weight loss


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Until solutions emerge, focusing on healthy eating instead of weight alone may yield better health outcomes


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