A Healthy diet and Healthy lifestyle are what the current generation needs for the health of future generations. Some unhealthy foods that can harm your sex life are: Microwave Popcorn - A chemical found in the lining of the bag of popcorn can kill libido and lower sperm counts. Soy - It slashes sperm levels in men and messes with the ovarian function in women. Cheese - made from Cow’s milk contains synthetic hormones which are harmful to oestrogen and testosterone levels.