Wild oats (Avena sativa) have been marketed for their ability improve circulating testosterone concentrations due to their sterol content; however, there is no evidence to support the conversion of plant sterols to testosterone in the human body. Wild oat supplementation has been used as a natural aphrodisiac and strength enhancer by men and women without any published scientific support. No adverse effects on health have been reported, but there is no solid research upon which to base a recommendation for supplementation in athletes.