Animal study · Supplements / medicine · 1 Sept 2026
Obesity leaves a lasting memory in immune cells
Source: ScienceDaily
What the research found
Study. A University of Birmingham–led team reports in EMBO Reports that helper T cells (CD4+ lymphocytes) can keep DNA-methylation marks linked to past obesity for an estimated 5–10 years after weight loss. The 10-year project sampled blood and fat from people after weight-loss injections, a genetic early-onset obesity condition, a 10-week exercise program, and joint-replacement surgery, plus high-fat-diet mice. Authors suggest autophagy and immune senescence pathways may stay altered, which could help explain leftover disease risk after weight returns toward normal. This is mechanistic human and mouse work, not a claim that any supplement erases “obesity memory.” Weight-management decisions belong with a clinician.
Evidence level: Animal study. Results in animals or cells often don't carry over to people.
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