Fasting can actually improve the performance of reproductive organs. PH and alkaline levels in the body are balanced when you fast and that can increase the function of different body organs.

With no eating for a long time, different types of bacteria and viruses will not be able to infect harmful cells like cancer cells from surviving. In addition, fasting provides an opportunity for the digestive system to rest, allowing for detoxification and various impurities that can harm your health.
In fact, there are some suggestions that fasting improves the total number of sperm and can boost levels of gonadotropin and testosterone levels normally infertile males. To maintain the quality of sperm during fasting, it is best to eat a balanced diet during rest periods and check your fluid levels.