After the age of 30, most men experience a gradual drop in testosterone. However, this decrease rarely results in a “low T” level that’s substantially lower than what’s considered normal for a middle-aged or older man. Men’s health services in Tempe recognizes a variety of medical conditions that can cause significantly lower than normal testosterone levels in boys and men. These include:

  • Autoimmune diseases
  • Chronic liver or kidney disease
  • Chronic obstructive lung disease
  • Genetic causes
  • Heart failure
  • Infections
  • Injury to the testicles
  • Metabolic disorders
  • Obesity
  • Prolactinoma
  • Testicular cancer or treatment for testicular cancer
  • Type 2 diabetes

Some drugs are associated with low testosterone levels, including:


  • Chemotherapy drugs used to treat cancer
  • Corticosteroids
  • Opioids


  • Obesity, which is an epidemic in the United States as well as a growing problem in other parts of the world, has been known to have a lowering effect on testosterone levels in men. The good news is that weight loss is associated with an increase in testosterone levels. A 2004 study in diabetes, obesity and metabolism found that men who lost weight quickly over 9 weeks on a very low-calorie diet and maintained their weight loss for 12 months had sustained increases in testosterone. Studies of men who have bariatric surgery have also shown that significant weight loss leads to increases in testosterone levels. We can help you get back to feeling normal and leading a healthy, productive life in every way possible. Confide in us and you will be glad you did.