Who really needs testosterone?

The military plans to start screening service members for low testosterone, and social media is overflowing with claims about testosterone therapy. But who actually needs it?

The top 3

  1. Primary Hypogonadism: Causes & Symptoms: Primary hypogonadism results from testicular dysfunction, often due to genetic conditions like Klinefelter syndrome, undescended testes, mumps orchitis, injury, or chemotherapy, leading to low testosterone production despite normal brain signals [4, 23, 30]. Symptoms can include reduced muscle mass, decreased sex drive, and abnormal breast growth [28].
  2. Secondary Hypogonadism: Pituitary/Hypothalamic Issues: Secondary hypogonadism occurs when the pituitary gland or hypothalamus, parts of the brain that signal the testes, fail to produce the hormones necessary for testosterone production, often due to conditions like Kallmann syndrome, pituitary tumors, or inflammatory diseases [4, 9, 14, 26, 29].
  3. Age-Related Symptomatic Deficiency: When it's Considered: While testosterone levels naturally decline with age (about 1% per year after 30-40), TRT for age-related low testosterone is generally recommended only for men with sexual dysfunction who desire improvement, and not for improving energy, vitality, physical function, or cognition [3, 6, 24, 31].

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