Aging and the Hypothalamic PituitaryGonadal HPG Axis

Both males and females experience an age-related decline in the HPG axis. However, aging in the male system is a more gradual process in humans and in other species. Nonetheless, data show an age-related decline in testis function and decreased circulating androgen levels (for review, see Ottinger 1998). A recent study showed that circadian patterns in adrenal steroids were maintained in aging males for cortisol (Urbanski et al., 2004). Similarly, levels of dehydroepiandrosterone sulfate (DHEAS) also had a circadian pattern and did show an age-related decline.

Blood Pressure Health

Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

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