Member-only story
Testosterone is crucial for various functions in the human body. It affects the reproductive system, muscle growth, bone density, brain health, and metabolism. The testes produce this important hormone. It supports sperm production and other key processes.
Testosterone is also present in women, secreted by the ovaries and adrenal glands. Their bodies make much less of it — about one-tenth to one-twentieth as much as men do.
Studies show that low testosterone can cause several issues, such as:
- Brittle bones
- Reduced body and facial hair
- Low libido
- Loss of muscle mass
- Erectile dysfunction
- Low sperm count
- Poor concentration
- Gynecomastia (increased breast tissue)
- Fatigue
Studies have shown that a man’s testosterone levels naturally decline with age. At 40, people start to experience a decline, and by 75, they have about 30% less testosterone than they did at age 25.
However, age-related drops in testosterone are not the same thing as “low testosterone.”
Optimized testosterone levels can support “the male warrior hypothesis.” In one experiment, researchers had forty young men play a game. They could accept or reject offers from another person…
