What hormone produced in the testes influences male sexual characteristics

The levels of hormones in the body can be regulated by several factors. The nervous system can control hormone levels through the action of the hypothalamus and its releasing and inhibiting hormones. For example, TRH produced by the hypothalamus stimulates the anterior pituitary to produce TSH. Tropic hormones provide another level of control for the release of hormones. For example, TSH is a tropic hormone that stimulates the thyroid gland to produce T3 and T4. Nutrition can also control the levels of hormones in the body. For example, the thyroid hormones T3 and T4 require 3 or 4 iodine atoms, respectively, to be produced. In people lacking iodine in their diet, they will fail to produce sufficient levels of thyroid hormones to maintain a healthy metabolic rate. Finally, the number of receptors present in cells can be varied by cells in response to hormones. Cells that are exposed to high levels of hormones for extended periods of time can begin to reduce the number of receptors that they produce, leading to reduced hormonal control of the cell.

Recent research from the UIC group supports an alternative hypothesis, first articulated by Porges in 1998, says Carter. He posited that oxytocin, acting in part through effects on the autonomic nervous system, might allow what he termed "immobility without fear." In other words, oxytocin may in general protect the nervous system from shutting down in the face of stressful circumstances, especially those that require holding still rather than fighting or fleeing. That includes even events that may seem positive from a societal standpoint, such as birth.

Many hormones and their structural and functional analogs are used as medication . The most commonly prescribed hormones are estrogens and progestogens (as methods of hormonal contraception and as HRT ), [12] thyroxine (as levothyroxine , for hypothyroidism ) and steroids (for autoimmune diseases and several respiratory disorders ). Insulin is used by many diabetics . Local preparations for use in otolaryngology often contain pharmacologic equivalents of adrenaline , while steroid and vitamin D creams are used extensively in dermatological practice.

Potential side effects often mimic those of premenstrual syndrome, including breakthrough bleeding, menstrual cramps, bloating, dizziness, moodiness and fatigue. Some women experience rarer side effects like depression, fainting, breast tenderness, trouble sleeping, severe headaches or vision problems.

Potential adverse effects of long-term use of progestin with estrogen include invasive breast cancer, heart disease-related events, dementia (including Alzheimer's disease), stroke and blood clots. Talk to your health care professional if you experience side effects. Many fade with continued use, or a different product may help.

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What hormone produced in the testes influences male sexual characteristics

what hormone produced in the testes influences male sexual characteristics

Potential side effects often mimic those of premenstrual syndrome, including breakthrough bleeding, menstrual cramps, bloating, dizziness, moodiness and fatigue. Some women experience rarer side effects like depression, fainting, breast tenderness, trouble sleeping, severe headaches or vision problems.

Potential adverse effects of long-term use of progestin with estrogen include invasive breast cancer, heart disease-related events, dementia (including Alzheimer's disease), stroke and blood clots. Talk to your health care professional if you experience side effects. Many fade with continued use, or a different product may help.

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