These findings confirmed the results of our univariate analyses. While infertility is not always treatable, it can sometimes be improved with a healthy diet, supplements and other lifestyle strategies. However, some researchers have linked the worldwide use of drugs such as alcohol, marijuana, and cocaine to decreased sperm production. Axis in a and b. The best outcome for evaluation of improvement in infertility is pregnancy rate which needs long term follow-ups.
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Vitamins in the human sperm.
However, controlled studies are needed before any definite claims can be made. Vitamin c can help prevent sperm clumping together (agglutination).