The authors suggested that when women are fairly inactive and consume many more calories than needed, estrogen production increases dramatically. And our increased exposure to foreign substances called xenoestrogens, like plastics, perfumes, and pesticides, that create estrogenlike activity in the body, add to this “estrogen dominance.” He believed that American women frequently have estrogen levels that are too high in relation to progesterone levels, imbalances directly created by these nutrition and lifestyle factors. The latest research suggests that this estrogen dominance appears to be the cause of many PMS, perimenopausal, and menopausal symptoms and that it is implicated in conditions such as endometriosis, uterine fibroids, and polycystic ovarian syndrome.

Testosterone is the third sex hormone, and it can be unbalanced in both women and men. In women, testosterone imbalance can result in levels that are too high, producing symptoms such as:

• Feelings of aggression or hostility

• Irritability

• Increased sex drive

• Increased facial hair

• Acne

Symptoms of low testosterone in women include:

• Reduced energy

• Mild depression

• Lack of sex drive

• Hair loss

• Dry skin

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