HDL (high-density lipoprotein) is often called 'good cholesterol,' but its relationship with weight loss is more nuanced than common myths suggest. Fact: Low HDL is a cardiovascular risk factor, and weight loss—especially in overweight or metabolic syndrome—can modestly raise HDL levels (about 1–2 mg/dL per 5 kg lost). However, the increase is small and not guaranteed. Myth: Raising HDL through supplements or specific fats directly improves health or causes fat loss. Large trials show that pharmacologically increasing HDL does not reduce heart attack risk. Also, HDL does not 'burn fat'; it transports cholesterol to the liver. For weight loss, energy balance, exercise, and diet quality are primary drivers; HDL changes are secondary. Consumer tests that highlight HDL in isolation are misleading—HDL must be interpreted alongside LDL, triglycerides, and overall risk profile. Evidence: strong human data on HDL and cardiovascular disease, but moderate-to-weak evidence for HDL as a standalone target in weight loss interventions.
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