Learn about low testosterone and how it affects you.


About Low Testosterone

As you age, it may feel like that you’re losing your drive for the things you love. You may also feel weaker, or even prone to changes in mood. In men, most would attribute this to decreased testosterone levels. But what does that really mean, and how does that affect men?
Testosterone is the primary sex hormone responsible for everything from the development of the male reproductive tissues, to the development of muscles, to the growth of body hair. It is mainly produced in the testicles of males.
This hormone also drives the male sex drive. Healthy men generally have testosterone levels between 300 nanograms per deciliter (ng/dL) and 1,000 ng/dL. While the production of testosterone peaks during puberty, the amount that the body produces begin to decline by age 40.
For more information on the causes and symptoms of low testosterone, please refer to their corresponding pages on our website.

What are “Normal Levels” of Testosterone?

In healthy men, testosterone levels between 350 ng/dL and 1,000 ng/dL are referred to as normal. Normal physiology allows the brain and the testes to work together to keep testosterone in this range. The brain produces “signal” hormones that are responsible for stimulating testosterone production. These “signals” are periodically released, which in turn stimulates testosterone production. When levels of testosterone are in an acceptable range, the production of the “signal” hormones is slowed, which in turn allows the testosterone levels to decrease.

Feeling less energised? Not tackling life like you used to? Give us a call today to have your testosterone levels checked and analysed by one of our doctors.

Some Effects of Testosterone

  • Growth and maturation of prostate, and other male sex organs
  • Development of male hair distribution such as facial hair
  • Changes in body muscle mass and strength and fat distribution
  • Sex drive and sexual function
  • Mood and energy level
  • Bone strength


  • Descreased energy
  • Decreased sex drive
  • Loss of body hair
  • Erectile dysfunction
  • Increased breast size (Gynecomastia)
  • Increased body fat
  • Emotional changes
  • Changes in sleep patterns

These symptoms are similar to symptoms in other conditions, so it is important to get your testosterone level checked.


The loss of testosterone, as a man ages, is a regular finding in medicine. Many men experience an average loss of 1% of their testosterone per year, simply from factors associated with the production. This percentage does not take into account other factors that may affect the production of this hormone.


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