Interest in Maca among medical professionals is growing as are research studies. In terms of studies on Red Maca powder in particular, there are three major notable ones.
The most important study done on red maca was published in the Journal Reproductive Biology and Endocrinology 2005; 3:5. In it 8 medical researchers report that over the course of 42 days: “Red Maca but neither Yellow/Cream nor Black Maca reduced significantly ventral prostate size in rats.“ The study also goes on to report that in under pyhtochemical analysis for 7 RED-Webfunctional nutrient groups, “Highest peak values were observed for Red Maca, red-powder.jpgintermediate values for Yellow/Cream Maca and low values for Black Maca.”
In 2010 researchers from the Universidad Peruana, Lima published a study on the effects of Maca on bone structure in rats that had had their ovaries removed. The conclusion was that both “Red and Black Maca have protective effects on bone architecture in OVX rats without showing estrogenic effects on uterine weight.”
Finally another study from the same University in 2009 found that Black Maca to increase sperm production more than Yellow or Red Maca. The study concluded that while Red Maca, like other Macas, had a favorable effect on energy, mood and sexual desire, it did little to increase the volume of sperm produced in comparasion to Black or Yellow Maca.