Testosterone Levels Need Not Decline with Age

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Jinzang

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The Cooper Center measured testosterone levels of men during patient asessment and did a multiple regression to see what factors testosterone levels were associated with they found that testosterone levels were inversely correlated with BMI and correlated with aerobic fitness, but not correlated with age. This suggests the decline in testosterone levels with age can be prevented with healthy lifestyle choices. The summary of the article says:

"In a cross-sectional study of 2994 healthy men aged 50–79 years examined at a preventive medicine clinic from January 2012 to March 2016, screening morning total testosterone levels were measured and categorized as low (<250 ng/dL), low normal (250–399 ng/dL), and normal (>400 ng/dL). Cardiorespiratory fitness (fitness) was estimated from a maximal exercise treadmill test. Multiple logistic regression models were used to test the associations between low testosterone levels and age, body mass index (BMI), and fitness.

"Mean testosterone levels were in the normal range for each age group (50–59, 60–69, and 70–79). There was a similar prevalence of low testosterone in each age group (11·3%, 10%, and 10·5%, respectively). The prevalence of low testosterone was positively associated with BMI and negatively associated with fitness but was not associated with age.

"This study found no evidence that low testosterone is an inevitable consequence of aging. Maintenance of healthy weight and fitness may help maintain normal testosterone levels."
 
Defy Medical TRT clinic doctor
The Cooper Center measured testosterone levels of men during patient asessment and did a multiple regression to see what factors testosterone levels were associated with they found that testosterone levels were inversely correlated with BMI and correlated with aerobic fitness, but not correlated with age. This suggests the decline in testosterone levels with age can be prevented with healthy lifestyle choices. The summary of the article says:

"In a cross-sectional study of 2994 healthy men aged 50–79 years examined at a preventive medicine clinic from January 2012 to March 2016, screening morning total testosterone levels were measured and categorized as low (<250 ng/dL), low normal (250–399 ng/dL), and normal (>400 ng/dL). Cardiorespiratory fitness (fitness) was estimated from a maximal exercise treadmill test. Multiple logistic regression models were used to test the associations between low testosterone levels and age, body mass index (BMI), and fitness.

"Mean testosterone levels were in the normal range for each age group (50–59, 60–69, and 70–79). There was a similar prevalence of low testosterone in each age group (11·3%, 10%, and 10·5%, respectively). The prevalence of low testosterone was positively associated with BMI and negatively associated with fitness but was not associated with age.

"This study found no evidence that low testosterone is an inevitable consequence of aging. Maintenance of healthy weight and fitness may help maintain normal testosterone levels."

Too bad the summary leaves out key metrics.

Such as the percentage of men in the low normal range. For me, that is the most important range.

And they seem to want to make a conclusion that weight and fitness causes low testosterone, while I would suggest low testosterone is what causes weight gain and low fitness.
 
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