Biological aspects of menopause: across the lifespan.

"This review outlines the biological basics of menopause and then places menopause within the context of a dynamic lifespan. The basic tenets of the lifespan approach maintain that, for each individual, aging and development are lifelong processes from birth to death; biological, psychological, and sociocultural trajectories interweave across the life course; the entire lifespan serves as a frame of reference for understanding particular events or transitions; and the life course can be affected by environmental change.... This review also points to the gap between population-level studies of menopause and studies carried out at the biochemical, cellular, or organ systems level. Filling this gap...offers the most interesting directions for future anthropological research."