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nih.gov
ncbi.nlm.nih.gov
(en) Oi Y, Imafuku M, Shishido C, et al. Garlic supplementation increases testicular testosterone and decreases plasma corticosterone in rats fed a high protein diet. (2001) J Nutr 131:2150-2156. PMID11481410gratis volledige artikel.
(en) Gonzales GF, Córdova A, Vega K, et al. Effect of Lepidium meyenii (Maca), a root with aphrodisiac and fertility-enhancing properties, on serum reproductive hormone levels in adult healthy men. (2003) J Endocrinol 176:163-168. PMID12525260gratis volledige artikel.
(en) Gauthaman K, Adaikan PG, Prasad RN. Aphrodisiac properties of Tribulus Terrestris extract (Protodioscin) in normal and castrated rats. (2002) Life Sci 71:1385-1396. PMID12127159.
nutrition.org
jn.nutrition.org
(en) Oi Y, Imafuku M, Shishido C, et al. Garlic supplementation increases testicular testosterone and decreases plasma corticosterone in rats fed a high protein diet. (2001) J Nutr 131:2150-2156. PMID11481410gratis volledige artikel.