The menstrual cycle in context, II: Human gonadal steroid hormone variability.

Menstrual cycle-related mood or behavior changes are best understood in the context of the hormonal variability that occurs in men as well as in women over different periods of time. This paper reexamines what is known and what is not known about the clinical correlates of fluctuations in gonadal and adrenal steroid hormones. The authors highlight the need for a more gender-comparative approach to the psychoneuroendocrinology of endogenous cycles.