Lice in at Least 25 States Show Resistance to Common Treatments. Aug. 18, 2015 â The start of the school year means new classes, new friends, homework and sports. It also brings the threat of head lice. Scientists report today that lice populations in at least 25 states have ...
Both testosterone and estrogen levels experience a boost through regular sexual activity. Testosterone does more than just boost your sex drive, it helps fortify bones and muscles, and it keeps your heart in good working condition as well. In women, sex increases the levels of estrogen, which protects against heart disease.
Low libido in men or low sex drive is a common symptom of andropause. Just as low levels of testosterone can inhibit erectile function, testosterone has a strong effect on sex drive in men. In a man's brain there exist testosterone stimulating nerves. Sex drive in men starts with the release of testosterone which stimulates the receptors in the brain to release nitric oxide.