Hey, you ready for a new secret from me? HOW SUGAR AFFECTS SEX.π₯π₯΅ High amounts of sugar create a surge that abruptly turns into a feeling of fatigue. This negatively affects sex drive, because if you feel tired and fatigued, sex is the last thing on your mind. π¦πββ¬π Sugar affects testosterone levels in men. A decrease in testosterone levels directly affects libido.π§‘π€