Iron deficiency (with or without anaemia) is the world's most common nutrient deficiency, especially in menstruating women and athletes. Supplementation should follow ferritin testing.
Iron significantly reduced fatigue scores in non-anaemic women with low ferritin (≤50 ng/mL), the first trial supporting low-ferritin treatment without anaemia.
Alternate-day dosing (rather than daily) significantly improved iron absorption and reduced GI side effects. This changed clinical practice globally.
Iron supplementation significantly reduced restless legs severity in patients with serum ferritin <75 ng/mL.
We prioritize randomised controlled trials and meta-analyses over single observational studies. Animal and in-vitro data are listed as "mechanistic", they suggest direction, not human effect size.
We don't cherry-pick favourable studies, omit conflicting evidence, or cite industry-funded trials without flagging the conflict of interest where known.
The research is one thing, what to take, at what dose, paired with what, is another. We compose stacks that turn the evidence into a daily routine.
Studies referenced are real published research. Summaries are paraphrased for accessibility, for exact methods and full text, click through to PubMed. Educational use only, not medical advice. Consult a qualified clinician before starting any new supplement.