Some people who want to eat healthier switch to soy. However, soy has unhealthy fats that can create imbalance of estrogen and testosterone. This can affect your mood, energy, strength and sexual health. Moreover, excessive soy consumption may lead to breast development in men!
There is a research that a 19-year-old male experienced erectile dysfunction because of including a lot of soy in his diet. Another 60-year old man developed breasts and sexual dysfunction after drinking three quarts of soy milk every day for six months. Interesting to know that all these issues resolved after their diet was changed.
The only exception is fermented soy. Because it is made using natural fermentation.