Testosterone is a key hormone in the sexual development of males. It is produced in the testes and is responsible for many physical changes that occur in puberty for men. Testosterone levels are vital for normal growth.
Testosterone stimulates muscle growth and the development of certain sexual characteristics, like body and facial hair and the deepening of the voice. It is also vital in sperm production.
Testosterone production generally decreases with age. Older men tend to have low blood testosterone levels.
Low testosterone levels are a sign of Testosterone Deficiency Syndrome (TD) or Low Testosterone (Low-T). The American Urology Association defines Low-T as less than 300 nanograms per deciliter. The condition manifests the following symptoms:
- Low sex drive
- Fatigue
- Erectile dysfunction
- Reduced lean muscle mass
- Irritability
- Depression
Low-T may also be the result of specific conditions, like Klinefelter syndrome.
If you experience these symptoms, consult a medical professional. Testosterone Replacement Therapy is always a viable option for treatment.
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