Testosterone is an important male hormone. A male begins to produce testosterone as
early as seven weeks after conception. Testosterone levels rise during puberty, peak during
the late teen years, and then level off. After age 30 or so, it’s normal for a man’s testosterone
levels to decrease slightly every year.
early as seven weeks after conception. Testosterone levels rise during puberty, peak during
the late teen years, and then level off. After age 30 or so, it’s normal for a man’s testosterone
levels to decrease slightly every year.
Most men have more than enough testosterone. But, it’s possible for the body to
produce too little testosterone. This leads to a condition called hypogonadism. This can
be treated with hormonal therapy, which requires a doctor’s prescription and careful monitoring.
Men with normal testosterone levels should not consider testosterone therapy.
produce too little testosterone. This leads to a condition called hypogonadism. This can
be treated with hormonal therapy, which requires a doctor’s prescription and careful monitoring.
Men with normal testosterone levels should not consider testosterone therapy.
Testosterone levels affect everything in men from the reproductive system and sexuality to
muscle mass and bone density. It also plays a role in certain behaviors.
muscle mass and bone density. It also plays a role in certain behaviors.
It All
Starts Here
Starts Here
Another Hormone Maker
Sperm Production
Libido
The
Control Center
Control Center
Skin Issues
Fat Metabolism
Heart Health
The Messenger
The
Main Source
Main Source
Genital Transformation
Behavioral Traits
Beard and Body Hair
Muscle Mass
Bone Density
In the Bloodstream
Testosterone is a vital male hormone that is responsible for the development and maintenance of
male attributes. Women also have testosterone, but in much smaller amounts.
male attributes. Women also have testosterone, but in much smaller amounts.
The Effects of Testosterone on the Body
A male begins to produce testosterone as early as seven weeks after conception. Testosterone
levels rise during puberty, peak during the late teen years, and then level off. After age 30 or so,
it’s normal for a man’s testosterone levels to decrease slightly every year.
levels rise during puberty, peak during the late teen years, and then level off. After age 30 or so,
it’s normal for a man’s testosterone levels to decrease slightly every year.
Most men have more than enough testosterone. But, it’s possible for the body to produce too little testosterone. This leads to a condition called hypogonadism. This can be treated with hormonal
therapy, which requires a doctor’s prescription and careful monitoring. Men with normal
testosterone levels should not consider testosterone therapy.
therapy, which requires a doctor’s prescription and careful monitoring. Men with normal
testosterone levels should not consider testosterone therapy.
Testosterone levels affect everything in men from the reproductive system and sexuality to muscle
mass and bone density. It also plays a role in certain behaviors.
mass and bone density. It also plays a role in certain behaviors.
Endocrine System
The body’s endocrine system consists of glands that manufacture hormones.The hypothalamus, located in the brain, tells the pituitary gland how much
testosterone the body needs. The pituitary gland then sends the message to the
testicles. Most testosterone is produced in the testicles, but small amounts come
from the adrenal glands, which are located just above the kidneys. In women,
the adrenal glands and ovaries produce small amounts of testosterone.
Before a boy is even born, testosterone is working to form male genitals. During puberty,
testosterone is responsible for the development of male attributes like a deeper voice, beard,
and body hair. It also promotes muscle mass and sex drive. Testosterone production surges
during adolescence and peaks in the late teens or early 20s. After age 30, it’s natural for
testosterone levels to drop by about one percent each year.
testosterone is responsible for the development of male attributes like a deeper voice, beard,
and body hair. It also promotes muscle mass and sex drive. Testosterone production surges
during adolescence and peaks in the late teens or early 20s. After age 30, it’s natural for
testosterone levels to drop by about one percent each year.
Reproductive System
About seven weeks after conception, testosterone begins helping form malegenitals. At puberty, as testosterone production surges, the testicles and penis
grow. The testicles produce a steady stream of testosterone and make a fresh
supply of sperm every day.
Men who have low levels of testosterone may experience erectile
dysfunction (ED). Long-term testosterone therapy can cause a decrease in sperm production. Testosterone therapy also may cause enlarged prostate, and smaller, softer testicles. Men
who have prostate or breast cancer should not consider testosterone replacement therapy.
dysfunction (ED). Long-term testosterone therapy can cause a decrease in sperm production. Testosterone therapy also may cause enlarged prostate, and smaller, softer testicles. Men
who have prostate or breast cancer should not consider testosterone replacement therapy.
Sexuality
During puberty, rising levels of testosterone encourage the growth of thetesticles, penis, and pubic hair. The voice begins to deepen, and muscles and
body hair grow. Along with these changes comes growing sexual desire.
There’s a bit of truth to the “use it or lose it” theory. A man with low levels
of testosterone may lose his desire for sex. Sexual stimulation and sexual
activity cause testosterone levels to rise. Testosterone levels can drop during a long period
of sexual inactivity. Low testosterone can also result in erectile dysfunction (ED).
of testosterone may lose his desire for sex. Sexual stimulation and sexual
activity cause testosterone levels to rise. Testosterone levels can drop during a long period
of sexual inactivity. Low testosterone can also result in erectile dysfunction (ED).
Central Nervous System
The body has a system for controlling testosterone, sending messagesthrough hormones and chemicals that are released into the bloodstream.
In the brain, the hypothalamus tells the pituitary gland how much
testosterone is needed, and the pituitary relays that information to the testicles.
Testosterone plays a role in certain behaviors, including aggression and
dominance. It also helps to spark competitiveness and boost self-esteem. Just as sexual activity
can affect testosterone levels, taking part in competitive activities can cause a man’s
testosterone levels to rise or fall. Low testosterone may result in a loss of confidence
and lack of motivation. It can also lower a man’s ability to concentrate or cause feelings
of sadness. Low testosterone can cause sleep disturbances and lack of energy.
dominance. It also helps to spark competitiveness and boost self-esteem. Just as sexual activity
can affect testosterone levels, taking part in competitive activities can cause a man’s
testosterone levels to rise or fall. Low testosterone may result in a loss of confidence
and lack of motivation. It can also lower a man’s ability to concentrate or cause feelings
of sadness. Low testosterone can cause sleep disturbances and lack of energy.
It’s important to note, however, that testosterone is only one factor that
influences personality traits. Other biological and environmental factors are also involved.
influences personality traits. Other biological and environmental factors are also involved.
Skin and Hair
As a man transitions from childhood to adulthood, testosterone spursthe growth of hair on the face, in the armpits, and around the genitals.
Hair also may grow on the arms, legs, and chest.
A man with shrinking levels of testosterone actually may lose some body hair. Testosterone replacement therapy comes with a few potential side effects,
including acne and breast enlargement. Testosterone patches may cause minor skin irritation.
Topical gels may be easier to use, but great care must be taken to avoid transferring testosterone
to someone else though skin-to-skin contact.
including acne and breast enlargement. Testosterone patches may cause minor skin irritation.
Topical gels may be easier to use, but great care must be taken to avoid transferring testosterone
to someone else though skin-to-skin contact.
Muscle, Fat, and Bone
Testosterone is one of many factors involved in the development of musclebulk and strength. Testosterone increases neurotransmitters, which
encourage tissue growth. It also interacts with nuclear receptors in DNA,
which causes protein synthesis. Testosterone increases levels of growth
hormone. That makes exercise more likely to build muscle.
Testosterone increases bone density and tells the bone marrow to manufacture red blood cells.
Men with very low levels of testosterone are more likely to suffer from bone fractures and breaks.
Men with very low levels of testosterone are more likely to suffer from bone fractures and breaks.
Testosterone also plays a role in fat metabolism, helping men to burn fat more efficiently.
Dropping levels of testosterone can cause an increase in body fat.
Dropping levels of testosterone can cause an increase in body fat.
Testosterone therapy can be administered by a doctor via intramuscular injections.
Circulatory System
Testosterone travels around the body in the bloodstream. The only wayto know your testosterone level for sure is to have it measured. This
usually requires a blood test.
Testosterone spurs the bone marrow to produce red blood cells.
And,studies suggest that testosterone may have a positive effect
on the heart. But some studies investigating testosterone’s effect on cholesterol,
blood pressure, and clot-busting ability have had mixed results.
And,studies suggest that testosterone may have a positive effect
on the heart. But some studies investigating testosterone’s effect on cholesterol,
blood pressure, and clot-busting ability have had mixed results.
When it comes to testosterone therapy and the heart, recent studies have conflicting
results and are ongoing. Testosterone therapy delivered by intramuscular injection
may cause blood cell counts to rise. Other side effects of testosterone replacement
therapy include fluid retention, increased red cell count, and cholesterol changes.
results and are ongoing. Testosterone therapy delivered by intramuscular injection
may cause blood cell counts to rise. Other side effects of testosterone replacement
therapy include fluid retention, increased red cell count, and cholesterol changes.
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