Unsurprisingly, low testosterone levels are associated with an increased risk of cardiovascular disease and metabolic problems, such as diabetes. Sex Hormones, Aging, Ethnicity and Insulin Sensivity in Men: An Overview of the TELECOM Study.
Low testosterone can also cause erectile dysfunction, depression, mood changes, and low bone density.
It should be noted that labs use different assays and methodologies to measure free testosterone. Anderson RJ, Bergman DA, Garber JR, Hamilton CR, Hershon KS, Jovanovic LG, Kleerekoper M, Mechanick JI, Palumbo PJ, Peters AL, Rettinger HI, Rodbard HW, Rubenstein HA, Seibel JA, Tourtelot JB. Wang C, Nieschlag E, Swerdloff R, Behre HM, Hellstrom WJ, Gooren LG, Kaufman JM, Legros JJ, Lunenfeld B, Morales A, Morley JE, Schulman C, Thompson IM, Weidner W, and Wu FCW. Namiki M, Akaza H, Shimazui T, Ito N, Iwamoto T, Baba K, Kumano H, Koh E, Tsujimura A, Matsumiya K, Horie S, Maruyama O, Marumo K, Yanase T, Kumamoto Y.
To get your testosterone and other male hormone levels measured at a conveniently located lab, check out EMG’s Direct-to-Consumer Testing Lab Resources. In fact, among men over the age of 60, only about 1 in 5 men have a total testosterone level that falls below the normal range.
However, many men, even those in the lower end of the normal range, still suffer from symptoms associated with low T and could potentially benefit from testosterone replacement therapy.
Read on to learn about testosterone levels by age as well as symptoms of low testosterone and testosterone replacement therapy. Even worse, free testosterone (testosterone not bound in the blood to sex hormone-binding globulin (SHBG)) levels decline more rapidly than total testosterone.
Studies have shown that total testosterone decreases by approximately 30% in healthy men between the ages of 25 and 75.
For most symptoms, the average testosterone threshold corresponds to the lower end of the normal range for young men, i.e.