Maca Supplements: Libido, Hormones, Evidence and Safety

Maca usually refers to Lepidium meyenii. Root powders, gelatinized preparations and extracts differ. A colour name does not establish a superior benefit.^{See reference 1}

Keep the plant name, preparation and tested amount together when comparing a claim. An extract capsule with a stated root-equivalent amount is not automatically the same material as the powder used in a trial. The illustration depicts a root and powder; it does not certify a commercial product or select a maca colour.

The 2010 systematic review included four randomized trials in different populations, including healthy men, menopausal women, cyclists and men with erectile dysfunction. Some results were favourable and others were not. The authors judged the evidence limited because the trials were small and methodologically weak.^{See reference 2}

That review is an older evidence snapshot, not the entire later literature. The current MSK evidence summary also describes limited human trials and mixed findings. The practical question remains whether a specific preparation improved a defined endpoint in a population relevant to the claim.^{See reference 1,See reference 2}

A 12-week randomized, placebo-controlled study examined maca amounts of 1.5 or 3 g/day in healthy adult men. It found no significant effect on testosterone or the other reproductive hormones measured. Those quantities describe the experiment; they are not a recommended personal intake.^{See reference 3}

Desire and hormones are separate endpoints. The trial does not establish treatment for a low testosterone result or every later preparation.^{See reference 3}

The 2022 review included five randomized trials in healthy men or men experiencing infertility. Findings for semen concentration and motility were mixed. Its pooled sperm-concentration result did not show a significant benefit over placebo, and the evidence was too small for firm conclusions.^{See reference 4}

This is why a claim about semen parameters should not be rewritten as a promise of pregnancy, live birth or treatment success. This guide does not choose a fertility intervention or delay an appropriate assessment.^{See reference 4}

A 2015 trial assigned 45 women with antidepressant-associated sexual dysfunction and remitted depression to maca or placebo for 12 weeks. The studied maca amount was 3 g/day. Some remission measures favoured maca, but the analysis involved a small selected population and differing measures.^{See reference 5}

The finding does not tell a reader to stop an antidepressant, reduce its dose or add maca. A medicine-related symptom and the suitability of any proposed intervention require a clinician who can assess the treatment and the person together.

MSK records possible testosterone-immunoassay interference. That differs from a true hormone increase; disclose supplement use to the testing clinician.^{See reference 1}

Food use cannot clear a concentrated supplement. Pregnancy, breastfeeding, hormone-sensitive conditions and medicine combinations need individual review.^{See reference 1}

Identify the botanical name and preparation, the actual amount in a serving and any added ingredients. Find the study supporting the specific claim, then check whether it used that preparation, measured that outcome and included a comparable population. A coloured-root story or extract ratio alone does not answer those questions.

For example, a testosterone headline cannot be supported simply by a sexual-desire questionnaire. A fertility headline needs evidence about fertility outcomes. Use the endpoint to decide how far the result can be carried.^{See reference 3,See reference 4}