Testosterone is to facilitate the development of muscle and bone growth and maintenance. This is the result of anabolic properties.

Both sexes contribute to the production of testosterone peak during early adolescence to mature the body, stimulating the growth of body hair, leading to higher growth and create more hair and oily skin. In boys, the top voice of testosterone that causes the testes to grow and contribute to the development of sexual characteristics of others.

Normal levels of testosterone

Normal testosterone levels for 25 to 34 years old is 446 to 786 ng/dl

Normal testosterone levels for 35 to 44 years old is 455 to 879 ng/dl

Normal testosterone levels for 45 to 54 years old is 394 to 818 ng/dl

Normal testosterone levels for 55 to 64 years old is 366 to 756 ng/dl

Testosterone is a hormone, which is responsible for growth and normal development of male sexual and reproductive organs, including the testicles, penis, prostate, scrotum and bladder. Testosterone promotes the growth of secondary male characteristics such as gender of bone, fat, muscle, hair and voice modulation. It also maintains energy levels, disposal, fertility and sexual desire.

Approximately 50 million people in the United States will face a sort of growth hormone deficiency, 600,000 will receive treatment. Testosterone can lead to male baldness

Testosterone and disease

Testosterone deficiency can result in diseases such as Klienfelters syndrome, Anorchia (loss testes syndrome) or damage from surgery, chemotherapy, the use of anabolic steroids or irradiation of the gland and the hypothalamus' pituitary gland (brain) or testes.

Erection dysfunction and testosterone

Erection dysfunction may be come due to testosterone deficiency.

The underdevelopment of the penis and testicles during puberty may also be a sign of testosterone deficiency.

SYMPTOMS OF LOW TESTOSTERONE

As people get older, the ability to produce testosterone decreases. This drop in testosterone production sometimes called andropause or male menopause. When testosterone levels below the normal range some typical symptoms may include:

Inability to concentrate

Erection dysfunction

Fatigue

Increased depression or irritability

Decreased muscle mass and weakness

Osteoporosis (decrease bone density)

Low sex drive
In addition to age-related low testosterone levels, there are some medical conditions that can reduce testosterone levels. These disorders can begin in adolescence or adulthood and can affect testosterone levels throughout the life of a man/woman. Some of these conditions are testicles, pituitary or hypothalamus (part of the brain), a large number of inspections associated with the glands of the body. Sometimes the problem is genetic. In younger men with low testosterone production may reduce the growth of facial hair and body.

In addition to age-related low testosterone levels, there are some medical conditions that can reduce testosterone levels. These disorders can begin in adolescence or adulthood and can affect testosterone levels throughout the life of a man/woman. Some of these conditions are testicles, pituitary or hypothalamus (part of the brain), a large number of inspections associated with the glands of the body. Sometimes the problem is genetic. In younger men with low testosterone production may reduce the growth of facial hair and body.