In addition, poisonous chemicals, or other harmful substances can cause foodborne diseases if they are present in food. 1  More than 250 different foodborne diseases have been described. 2  Most of these diseases are infections, caused by a variety of bacteria, viruses, and parasites that can be foodborne.
Testosterone is an androgen and belongs in the lipid family. Testosterone is the primary male sex hormone, similar to how estrogen is the primary sex hormone in females. In females, testosterone is important to metabolic function. Women generally have about fifteen-to-twenty fold lower concentrations of testosterone than men do.
Guide. A testosterone test checks the level of this male hormone (androgen) in the blood. Testosterone affects sexual features and development. In men, it is made in large amounts by the testicles. In both men and women, testosterone is made in small amounts by the adrenal glands, and in women, by the ovaries.The pituitary gland controls the level of testosterone in the body. When the testosterone level is low, the pituitary gland releases a hormone called luteinizing hormone (LH) .This hormone tells the testicles to make more testosterone. Before puberty, the testosterone level in boys is normally low. testosterone test is done to: 1  See why a man is having problems in fathering a child (infertility). 2  A low amount of testosterone can lead to low sperm counts. 3  Check a man's sexual problems. 4  Having a low level of testosterone may lower a man's sex drive or not allow him to have an erection (erectile dysfunction).