Sexual Arousal

Testosterone is the primary male sex hormone. It also plays an important role in motivating competitive and sexual behaviors in both men and women, and it increases in response to sexual stimuli and competitive victories. Total T measures total levels of testosterone, whereas free T captures only unbound, biologically active levels of T. Either total T or free T can be measured in serum and plasma, but only free T can be measured in saliva. While testosterone is generally considered immunosuppressive, research finds that it has complex effects on different types of immune function.

Testosterone is the primary male sex hormone. It also plays an important role in motivating competitive and sexual behaviors in both men and women, and it increases in response to sexual stimuli and competitive victories. Total T measures total levels of testosterone, whereas free T captures only unbound, biologically active levels of T. Either total T or free T can be measured in serum and plasma, but only free T can be measured in saliva. While testosterone is generally considered immunosuppressive, research finds that it has complex effects on different types of immune function.

DHEA is an adrenal androgen that increases in response to stress (especially chronic stress). DHEA-S is a sulfated version of DHEA, with levels that are 100x higher than DHEA. DHEA is converted to various sex hormones in the body and plays a role in regulating aging and immune function.

DHEA is an adrenal androgen that increases in response to stress (especially chronic stress). DHEA-S is a sulfated version of DHEA, with levels that are 100x higher than DHEA. DHEA is converted to various sex hormones in the body and plays a role in regulating aging and immune function.

Sex Hormone Binding Globulin (SHBG) is a protein primarily produced in the liver that binds to the sex hormones testosterone (an androgen), dihydrotestosterone (DHT) (an androgen), and estradiol (an estrogen) in the blood, rendering them biologically inactive. Changes in SHBG levels can affect the amount of these hormones that is available to activate hormone receptors in tissues throughout the body.