| http://www.w3.org/ns/prov#value | - ???Secondary amenorrhea is an absence of menstruation for greater than or equal to three months.???12 Secondary amenorrhea can be triggered by ???problems that affect estrogen levels, such as stress, weight loss, exercise, or illness;??? ???problems affecting the pituitary, thyroid, or adrenal gland;??? or ???ovarian tumors or surgical removal of the ovaries.???13 Stress, whether physical or emoti
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