Тестостерон и мака

 

Lepidium meyenii (maca)

Lepidium meyenii (maca)

Three randomized, double-blind, placebo-controlled studies (41, 52, 66) examined the effects of maca on testosterone concentrations. Two studies used gelatinized maca (41, 52) and 1 study used a dried maca extract (66). A total of 126 male participants were recruited for the studies, with ages ranging from 20 to 56 y and sample sizes ranging from 20 to 56 participants.

There were no statistically-significant increases in testosterone concentrations after 12 wk of supplementation in any of the trials. The study by Zenico et al. (66) recruited 50 men with mild-to-moderate erectile dysfunction (mean age: 36 ± 5 y). Participants supplemented with 2.4 g of maca (pulverized, dehydrated maca root) daily did not increase testosterone concentrations compared with the placebo group. Two studies (41, 52) recruited healthy men (age range: 20–56 y). In a study conducted in 20 healthy men between the ages of 20 and 40 y, supplementing with 1.75 g of gelatinized maca (dried hypocotyls of maca were rehydrated and pressurized under moist conditions) daily was associated with no significant difference in testosterone concentrations compared with the placebo group (52), while in a study of 56 healthy men aged between 21 and 56 y, 3 gelatinized (method not described) maca doses and schedules (1500 mg/d, 3 divided doses; 3000 mg/d, 3 divided doses; 1500 mg/d, 1 dose) were associated with no significant difference in testosterone concentrations compared with the equivalent placebo doses and schedules.