Adaptogens
Evidence: moderate_human
Maca (Lepidium meyenii) contains unique macamides and macaenes (fatty acid derivatives), glucosinolates, and alkaloids. Unlike most adaptogens, maca does not directly affect testosterone, estrogen, or cortisol levels in blood. Instead, it appears to work as a 'hormonal normalizer' by acting on the hypothalamic-pituitary axis, modulating GnRH pulsatility and improving receptor sensitivity. Macamides interact with the endocannabinoid system (FAAH inhibition) and may modulate GABA and opioid pathways. Maca improves sexual function and desire through mechanisms independent of direct hormone elevation — likely central nervous system pathways.
Standard: 1500-3000mg gelatinized maca daily
Loading: 3000mg/day for first 4 weeks
Maintenance: 1500mg/day
Administration: oral
Timing: Morning with breakfast. Can be added to smoothies.
Duration: Cycle 12 weeks on, 4 weeks off, or ongoing
The key clinical insight is that maca does NOT directly raise testosterone — its benefits on libido, energy, and well-being appear to operate through different pathways (possibly endocannabinoid/hypothalamic). This means it's safe to combine with hormonal strategies without additive hormone elevation concerns. Gelatinized form is critical for tolerability — raw maca causes significant GI distress. The color-specific effects are clinically useful for tailoring recommendations. Effective in both men and women, including menopausal symptom relief.
Gelatinized maca is pre-cooked to remove starch, improving digestibility and concentrating bioactives — strongly preferred over raw maca. Color matters: red maca for prostate/female hormonal support, black maca for spermatogenesis and cognition, yellow maca for general vitality. Peruvian-sourced from Junin plateau (4000m altitude) is traditional. Brands: The Maca Team (Peruvian source), Gaia Herbs, Navitas Organics.
Take the free assessment and get personalized recommendations based on your biology and goals.
Get Your Free Protocolor take the assessment →