Ashwagandha supplements may help increase testosterone levels in men and can even have some possible benefits for male fertility. A review of 4 studies found that in men with low sperm count, the herb can significantly improve sperm concentration, sperm motility, and semen volume. Another study found that administering ashwagandha to infertile men helped enhance sperm quality considerably by rebalancing reproductive hormone levels.
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Additionally, a stress-related ashwagandha study found that the powerful herb increased testosterone levels in male but not female participants. That said, researchers still say that more research is needed to confirm the benefits of ashwagandha for male fertility.
Limited research suggests that ashwagandha may help reduce symptoms of some mental health conditions, including depression. In a study that observed the effects of ashwagandha in people with schizophrenia, it was discovered that the participants who took ashwagandha extract daily for 3 months experienced a decrease in symptoms of depression and anxiety.
Another study from 2012 found that stressed adults who consumed ashwagandha for 2 months reported an almost 80 percent reduction in symptoms of depression.