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The ongoing pharmaceutical marketing blitz promises that low-T treatment can make men feel more alert, energetic, mentally sharp, and sexually functional. Men and women have different physiologic ranges, different evidence bases for treatment, and different monitoring goals. Supraphysiologic levels may increase adverse effects without improving the intended therapeutic outcome. This means women's TRT targets should not be "as high as possible while feeling good." The better standard is "the lowest effective exposure that stays within the female physiologic range and supports the specific symptom target under monitoring." It is to stay within the physiologic range for women while assessing whether the symptom that justified therapy is actually improving. Major consensus statements emphasize that there is no blood testosterone cutoff that can diagnose a female androgen-deficiency syndrome the way clinicians diagnose male hypogonadism.
The ovaries of women with PCOS contain multiple cysts. Having too much naturally-occurring testosterone is not a common problem among men. But having high cholesterol doesn't mean your testosterone will be high. Testosterone is synthesized in the body from cholesterol.
Based on the predetermined criteria, publications that evaluated the effects of testosterone using descriptive, observational, or experimental designs involving human subjects were included. Because it promotes protein synthesis and muscle hypertrophy through androgen receptor binding in muscle cells, testosterone is a critical regulator of muscle mass; this anabolic impact is required for muscle development and repair, making testosterone crucial for preserving muscle mass . The increase in sex steroid production during puberty speeds up bone mineral accumulation and causes sex-specific variations in bone growth; after mid-puberty, the male population experiences a greater increase in periosteal bone growth than the female population, who shows more pronounced endocortical bone formation . In men, testosterone is primarily synthesized in the testes and the adrenal gland, with smaller amounts produced in the ovaries and adrenal glands in women .
Testosterone levels are at their highest during adolescence and early adulthood. This decline is concerning because strong research shows a link between low testosterone and obesity, increased disease risk, and premature death. Testosterone levels may drop as quickly as 30 minutes after you drink alcohol.
Testosterone levels begin to decline when you reach your mid-thirties, and drop further as you age. You could fill a whole refrigerator with the variety of hormone-healthy foods you can add to your plate. Clinically, if you’re doing well and your doctor agrees that your levels are within good ranges, then you’ll want to test every six months. Even if you don’t have any symptoms of low testosterone, it’s still good to get a blood test annually, she says.
The average male who reaches 70 years old will have testosterone production that’s 30 percent below his peak (5). To determine what’s a good testosterone level for your age, you also need to look at the clinical picture. At its peak, during your adolescent years, a normal range for your testosterone is anywhere between 300 and 1,200 ng/dL (4). That’s when we start to check your hormone levels,"  McDevitt says. You may become pre-diabetic, or see your cholesterol levels rise, says Danielle McDevitt, M.D., a physician who specializes in hormones. It helps men develop during puberty, and as they age, it plays a critical role in helping control fat levels, cholesterol, and glucose levels (1).
If a man's testosterone is below the normal range, it's best to repeat it once more to be sure before starting testosterone therapy - often staying on it indefinitely. General fatigue and malaise has so many other causes, and when most men get a blood test, the result is a normal testosterone level. • In women, therapy should stay within the female physiologic range and is supported for much narrower indications.