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Low Testosterone

Low testosterone -- also known as testosterone deficiency, hypogonadism, or andropause -- is the decrease in the production of testosterone by the testes. Testosterone can decline naturally with age, but a significant decrease could be the result of disease or damage to the hypothalamus, pituitary gland, or testicles. There are many treatments for low testosterone. Please speak with your physician if you experience any of the symptoms listed below. 


For adult men, the symptoms of low testosterone include:

  • Diminished libido (desire for sex)
  • Erectile dysfunction
  • Fatigue
  • Muscle weakness
  • Loss of hair
  • Depression
  • Other mood disorders
  • Increased body fat


  • Male gender
  • Age
  • Pituitary gland problems
  • Other medical illnesses such as diabetes, liver or kidney diseases
  • Testicular injuries


After doing a history and physical exam, the provider may order hormonal blood tests to determine the cause of the deficiency.


The treatment of testosterone deficiency is hormone replacement therapy.  Hormone replacement therapy uses testosterone administered through the skin or injected in controlled intervals. The most common transdermal delivery is a testosterone patch and gel.