Human study · Supplements / medicine · 19 Aug 2026
Coffee drinkers have less fat, more muscle, and surprising hormone differences
Source: ScienceDaily
What the research found
Study (observational). University of Oulu researchers writing in the European Journal of Nutrition studied 2,264 people aged 46 in the Northern Finland Birth Cohort 1966. Higher usual coffee intake tracked with less total and visceral fat and more skeletal muscle despite similar BMI, plus lower branched-chain amino acids. Men also showed a more favorable glucose-insulin profile and higher SHBG; free-androgen patterns differed by sex. Association is not causation, and this is not a prescription to drink more coffee. Bone-density questions from other coffee studies remain separate.
Evidence level: Human study. A study in people, but an association isn't proof of cause.
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