Study Title: Beneficial effects of dark chocolate on exercise capacity in sedentary subjects: underlying mechanisms. A double blind, randomized, placebo controlled trial
Citation: Taub et al., 2016. Food & Function
What the Study Found: In sedentary adults, three months of dark chocolate consumption improved maximum work output and showed trends toward higher VO₂ max. It increased signaling proteins linked to mitochondrial function (AMPK and PGC-1α) and improved antioxidant markers. These changes enhanced mitochondrial efficiency and energy production without increasing mitochondrial number.
What this means in real life: Even in people who don’t exercise much, mitochondria can become more efficient at turning fuel into usable energy. This study shows that the (−)-epicatechin in dark chocolate boosts key mitochondrial signaling pathways, helping sedentary individuals perform better during physical activity. Mitochondrial support like this is a simple way to improve everyday energy and exercise tolerance.
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