| http://www.w3.org/ns/prov#value | - Stress hormones such as catecholamines (adrenalin, nonadrenaline and dopamine) and the hypothalamic-pituitary-adrenal axis interact with hormones which are responsible for normal ovulatory cycles: i.e., gonadotropin releasing hormone (GnRH), prolactin, LH and FSH. Endogenous opiates and melatonin secretion are altered by stress and interfere with ovulation. (6)
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