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What age does testosterone peak?

Testosterone levels reach their peak around age 18 or 19 before declining throughout the remainder of adulthood.

healthline.com - Testosterone Levels by Age: Normal Levels, Low T Signs, Women & More

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Overview Testosterone is a powerful hormone in both men and women. It has the ability to control sex drive, regulate sperm production, promote muscle mass, and increase energy. It can even influence human behavior, such as aggression and competitiveness. As you grow older, the level of testosterone in your body gradually decreases. This can lead to a variety of changes such as reduced sex drive. While lower testosterone levels may be concerning, it’s a natural part of aging. Normal testosterone levels The “normal” or healthy level of testosterone in the bloodstream varies widely, depending on thyroid function, protein status, and other factors. According to recent guidelines from the American Urological Association (AUA), a testosterone level of at least 300 nanograms per deciliter (ng/dL) is normal for a man. A man with a testosterone level below 300 ng/dL should be diagnosed with low testosterone. For women ages 19 and up, normal testosterone levels range from 15 to 70 ng/dL. Testosterone levels reach their peak around age 18 or 19 before declining throughout the remainder of adulthood. In the womb Testosterone is necessary for normal fetal development during pregnancy. It controls the development of the male reproductive system. Testosterone levels in the womb may also affect how your right and left brain function, according to one study that looked at 60 children. Testosterone levels have to fall within a very narrow margin in order for the fetal brain to be healthy. High levels of fetal testosterone may be linked to autism. Adolescence to early adulthood Testosterone levels are at their highest during adolescence and early adulthood. In boys, the first physical signs of testosterone, or androgens, in the body are apparent during puberty. A boy’s voice changes, his shoulders broaden, and his facial structure becomes more masculine. Adulthood As men get older, their testosterone levels may decline about 1 percent per year after age 30. In premenopausal women, testosterone is made mainly in the ovaries. Levels will decline after menopause, which usually begins between ages 45 and 55. Tests and diagnosis The best way to diagnose low testosterone is to visit your doctor for a physical exam and a blood test. Your doctor will look at your physical appearance and sexual development. Because testosterone levels are usually higher in the morning, the blood test should be performed before 10:00 a.m. in younger men. Men over 45 can be tested until 2:00 p.m. and still receive accurate results. Risks associated with the blood test are rare but may include bleeding, pain at the injection site, or infection.

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Are nuts good for testosterone?

Nuts also have high levels of phytosterols, which although beneficial for heart health, are not so good for high testosterone.

performancecenterformen.com - What Foods Destroy Testosterone (Blog) - Performance Center For Men

As you might know, estrogen works in stark contrast to testosterone. Some soy advocates argue that phytoestrogen isoflavones have a much smaller effect as compared to estrogen. However, these substances also reduce the activity of androgen receptors, meaning that it will disrupt the testosterone activity in your body. No good for us men! In other words, you will not be able to feel the full benefits of whatever testosterone there is in your bloodstream since phytoestrogen isoflavones are interfering with the critical function of androgen receptors, without which testosterone cannot work. The adverse effects of soy products on androgen receptors are responsible for the maintenance and development of the male phenotype. Another problem with soy is that it disrupts the thyroid function due to which it is described as ‘goitrogenic.’ Suppression of the thyroid gland is a key reason why many men and even women have low testosterone levels. Soy problems don’t end here. Another major health issue is that soy has the wrong fatty acid profile. Over half of all fat content in soy is polyunsaturated fatty acids or PUFAs. These fatty acids can sharply depress testosterone production when their percentage is too high as in soy products.

Sadly, avoiding soy is not as easy as you might think.

Soy is now part of many processed foods and it is also given to kids in school meals. Therefore, make sure to read labels carefully to avoid this testosterone killer. Science may not have yet proven the exact chemical pathways through which soy reduces testosterone. However, you are better off avoiding it, irrespective of the exact causes.