For women, mold toxicity may cause imbalances between progesterone and estrogen or just overall low levels of progesterone, testosterone estrogen, and DHEA.  Therefore, women can experience various medical conditions such as infertility, irregular cycles, endometriosis, premenstrual syndrome or PMS, and a depressed mood. Similarly, mold toxicity can cause low testosterone levels for men, which causes low libido and motivation. Simultaneously, elevated estrogen may lead to female features such as breast enlargement and can also cause weight gain.