Diverse scientific investigations have been led which prove the positive effects of maca, among them the following studies:

Clément, C., J. Kneubühler, A. Urwyler, U. Witschi, and M. Kreuzer. 2010. Effect of maca supplementation on bovine sperm quantity and quality followed over two spermatogenic cycles. Theriogenology 74 (2) (7/15): 173-83.

Clément, C., U. Witschi, and M. Kreuzer. 2012. The potential influence of plant-based feed supplements on sperm quantity and quality in livestock: A review. Animal Reproduction Science 132 (1–2) (5): 1-10.

Gasco, M., L. Villegas, S. Yucra, J. Rubio, and G. F. Gonzales. 2007. Dose–response effect of red maca (lepidium meyenii) on benign prostatic hyperplasia induced by testosterone enanthate. Phytomedicine 14 (7–8) (8/6): 460-4.

Gustavo F. Gonzales, Ethnobiology and Ethnopharmacology of Lepidium meyenii (Maca), a Plant from the Peruvian Highlands. Evidence-Based Complementary and Alternative Medicine, vol. 2012, Article ID 193496, 10 pages, 2012. doi:10.1155/2012/193496.

Gonzales, G. F., et al. "Lepidium meyenii (maca) improved semen parameters in adult men." Asian J. Androl. 2001; 3(4): 301–3. 

Lee, Kyeong-Jun, Konrad Dabrowski, Manuel Sandoval, and Mark J. S. Miller. 2005. Activity-guided fractionation of phytochemicals of maca meal, their antioxidant activities and effects on growth, feed utilization, and survival in rainbow trout (oncorhynchus mykiss) juveniles. Aquaculture 244 (1–4) (2/28): 293-301.

Lee, Myeong Soo, Byung-Cheul Shin, Eun Jin Yang, Hyun-Ja Lim, and Edzard Ernst. 2011. Maca (lepidium meyenii) for treatment of menopausal symptoms: A systematic review. Maturitas 70 (3) (11): 227-33.

Rondán-Sanabria, Gerby Giovanna, and Flavio Finardi-Filho. 2009. Physical–chemical and functional properties of maca root starch (lepidium meyenii walpers). Food Chemistry 114 (2) (5/15): 492-8.

Stone, Mark, Alvin Ibarra, Marc Roller, Andrea Zangara, and Emma Stevenson. 2009. A pilot investigation into the effect of maca supplementation on physical activity and sexual desire in sportsmen. Journal of Ethnopharmacology 126 (3) (12/10): 574-6.

Valentová, Kateřina, David Stejskal, Josef Bartek, Svatava Dvořáčková, Vladimír Křen, Jitka Ulrichová, and Vilím Šimánek. 2008. Maca (lepidium meyenii) and yacon (smallanthus sonchifolius) in combination with silymarin as food supplements: In vivo safety assessment. Food and Chemical Toxicology 46 (3) (3): 1006-13.

Wang, Yali, Yuchun Wang, Brian McNeil, and Linda M. Harvey. 2007. Maca: An andean crop with multi-pharmacological functions. Food Research International 40 (7) (8): 783-92.

Yábar, Emilio, Romina Pedreschi, Rosana Chirinos, and David Campos. 2011. Glucosinolate content and myrosinase activity evolution in three maca (lepidium meyenii walp.) ecotypes during preharvest, harvest and postharvest drying. Food Chemistry 127 (4) (8/15): 1576-83.

Yucra, Sandra, Manuel Gasco, Julio Rubio, Jessica Nieto, and Gustavo F. Gonzales. 2008. Effect of different fractions from hydroalcoholic extract of black maca (lepidium meyenii) on testicular function in adult male rats. Fertility and Sterility 89 (5, Supplement) (5): 1461-7.

On you can find diverse findings based on studies and research done on maca conducted by third parties.


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