Evidence-based nutrition, in plain English — every entry sourced from clinical research.
Journal of sport and health science, 2025 · Systematic review
Across the studies reviewed, iron deficiency was linked to reduced endurance performance in female athletes, and oral iron supplementation improved endurance in those who were deficient.
Summary in our own words; follow the link for the source and full abstract.
A note on health content. This article is for general information and is not a substitute for professional medical or dietetic advice. Where we cite research, links to the original papers are provided so you can read the evidence yourself.
The two most evidence-backed diets overlap more than they differ. We compare the trial evidence, a typical week of eating, and who each pattern suits best.
Refined and extra virgin olive oil share a fat profile but not a polyphenol profile — and the polyphenols are where much of the cardiovascular evidence lives.
Most people eat roughly half the fibre they need. What fibre actually is, what the evidence says it does, and how to close the gap without discomfort.
The 0.8 g/kg RDA prevents deficiency, but thriving needs more. A clear, evidence-first guide to protein needs by body size, activity, age and goal.
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