Apple cider vinegar is acidic in nature, but when consumed in moderation, it is usually diluted in the stomach and should not have a significant impact on the overall pH balance in the body, including the semen. There is no evidence to suggest that moderate consumption of apple cider vinegar sexually can lower sperm count or negatively affect sperm motility. Apple cider vinegar contains some antioxidants, such as polyphenols, which may have a positive effect on overall health, including reproductive health. Antioxidants can help reduce oxidative stress, which can be beneficial for sperm quality and fertility. However, there is no direct evidence linking ACV to negative effects on testosterone or sperm production in humans.