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Maca Root; Lepidium meyenii Walp. (accepted name, Kew POWO); Lepidium peruvianum G.Chacon (a synonym per Kew POWO and World Flora Online, though contested in some commercial literature); Maca-maca; Maino; Ayak Chichira / Ayak Willku (Quechua, per MSK About Herbs). "Peruvian Ginseng" / "Ginseng Andin" are marketing names only - maca is a Brassicaceae crop, not related to Panax ginseng.
A cruciferous root vegetable (technically a hypocotyl) native to the high Andes of central Peru, with extensions into Bolivia, northern Chile, and northwestern Argentina (Kew Plants of the World Online: native range S. Peru to NW. Argentina). Cultivated above 4,000 m on the Junin-Pasco plateau, where it has been a traditional staple food and fertility / stamina tonic for over a millennium.
⚕ Educational content · traditional and historical use · not medical advice
Maca is a high-altitude Andean root vegetable (technically a hypocotyl) eaten as a staple food and fertility tonic in central Peru for over a millennium. It has been examined in modern clinical trials for sexual desire and sexual function; the evidence for menopausal-life-stage support and for energy and mood is limited and of low-to-moderate quality (Shin 2010 and Lee 2011 systematic reviews; Beharry & Heinrich 2018 critical review).
Traditional Andean preparation is always cooked: boiled (the most frequent form), roasted in huatia earth ovens, or made into mazamorra porridge or chicha de maca. Modern forms: gelatinized (pre-cooked, starch-removed) powder; spray-dried extract; capsules. Raw maca powder is a modern, non-traditional form and may cause GI distress - gelatinized or cooked forms are preferred.
With food to improve GI tolerance. Use gelatinized or cooked forms to reduce the glucosinolate load and GI effects. (No maca-specific evidence supports pairing with vitamin C for mineral absorption - that generic claim was removed.)
Maca is endemic to the Meseta de Bombon / Junin-Pasco plateau of central Peru, between roughly 3,950 and 4,450 m - one of the highest-altitude cultivated food crops in the world. It is FIRST a food, second a medicine. The Spanish chronicler Cieza de Leon (1553) described root use "for maintenance"; Father Bernabe Cobo (1653) first recorded the name "maca" and its use for fertility; the 18th-century botanist Ruiz noted fertility and stimulant properties. The fertility tradition genuinely extended to LIVESTOCK - colonial pastoral records document maca being fed to introduced European animals that struggled to reproduce at altitude, so the human-and-animal fertility tonic use is a real documented Andean tradition, not a modern invention. Traditional preparation is always cooked: hypocotyls are boiled in water (the most frequent form), or made into mazamorra (porridge), chicha de maca (fermented drink), or roasted in huatia earth ovens. Raw maca powder is a modern (post-1990s) supplement form. Traditional intake in maca-growing communities exceeds 20 g/day of cooked product, versus about 1.5 to 3.5 g/day of powder in supplement trials - a gap that matters, because maca's strong safety record derives largely from food-level consumption of cooked product. The post-1990s commercialisation triggered biopiracy disputes: Pure World Botanicals obtained US patents (6,267,995; 6,428,824; 6,552,206) on maca extracts for sexual dysfunction; Peru's INDECOPI National Anti-Biopiracy Commission formally challenged them at the WTO (2006), and the case is widely cited as a motivating example for the Nagoya Protocol.
A cruciferous (Brassicaceae) storage hypocotyl whose characteristic constituents include benzyl glucosinolates (glucotropaeolin), macamides (N-benzyl fatty-acid amides), macaenes, imidazole alkaloids (lepidilines A and B), and thiohydantoins (macahydantoins). Maca contains no known phytoestrogens (no isoflavones, lignans, or coumestans). Human studies (Gonzales 2002; Brooks 2008; Stojanovska 2015) consistently show no change in serum LH, FSH, prolactin, testosterone, or estradiol - i.e., the reported effects do NOT involve direct hormonal mechanisms or hormone replacement. This non-hormonal profile is a genuine, well-supported point of distinction.
Maca is genuinely a high-Andes traditional FOOD crop first and a fertility / stamina tonic second. Two honest framing points: (1) the evidence is moderate-but-low-quality - the two canonical systematic reviews (Shin 2010, Lee 2011) and the leading critical review (Beharry & Heinrich 2018) all call it "limited" and shaped by market demand; sexual desire (especially antidepressant-induced sexual dysfunction) is the best-supported use. (2) The "does not involve direct hormone replacement" point is ACCURATE and a real strength - maca has no phytoestrogens and does not change LH, FSH, testosterone, or estradiol. Taxonomy: the accepted name is Lepidium meyenii Walp.; L. peruvianum G.Chacon is a synonym per Kew POWO (its defence has commercial conflict-of-interest). The Prop 65 and goitrogen cautions are genuine; the warfarin / bleeding contraindication was removed as unsupported. Distinct from Asian Ginseng (ID 21) - not related to Panax.
Cautions: WARNING: California Proposition 65 - maca grown in the Cerro de Pasco-influenced Junin soils can carry cadmium and lead exceeding FAO/WHO limits (Orellana-Mendoza 2021: mean Cd 0.32 mg/kg, Pb 0.20 mg/kg in maca hypocotyls), and California's Maximum Allowable Dose Levels are low enough (Pb 0.5 ug/day, Cd 4.1 ug/day) that trace contamination can trigger labelling - this warning has a real, documented basis. www.P65Warnings.ca.gov. Avoid during pregnancy and breastfeeding (insufficient supplement-dose safety data, while noting traditional food-level use). Goitrogen note: maca is about 80 to 90 percent glucotropaeolin by glucosinolate content (a Brassica trait); cooking substantially reduces glucosinolates and traditional preparation is always boiled - no human thyroid RCT of maca exists, so this caution is extrapolated from Brassica-family data. May cause headache or mood changes in some users. No documented warfarin or bleeding interaction exists (Ge 2014's comprehensive herb-warfarin review does not list maca) - discuss any supplement with your provider, but the previous absolute anticoagulant contraindication was not evidence-based and was removed.
Contraindications: Hormone-sensitive cancers (precautionary - discuss with your provider per MSK guidance, despite maca having a non-estrogenic mechanism); pregnancy and breastfeeding (insufficient supplement-dose safety data, while noting traditional food use); known maca or Brassicaceae allergy. (The previous "bleeding disorders" and "warfarin" contraindications were REMOVED - not supported by the literature; Ge 2014 omits maca from documented herb-warfarin interactions.)
For informational purposes only. This entry does not constitute medical advice. Consult a qualified healthcare provider before starting any supplement, especially if you have existing health conditions, are pregnant or breastfeeding, or take prescription medications.