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Testosterone deficiency

Man in his late middle age with arms crossed and looking mildly frustrated

Impact of testosterone deficiency

How common is testosterone deficiency?

Testosterone deficiency is common, however the exact proportion of men that are affected is unknown and the condition is expected to be underreported.

It is estimated that 40% of men over the age of 40 are deficient and 50% of men over the age of 80 are deficient. [1]

Graphic stating: "40% of men over 40 are deficient" and "50% of men over 80 are deficient"

What impact does testosterone deficiency have?

Testosterone is an integral hormone in the maintenance of overall health and wellbeing as well as being the key androgen in the maintenance of male sexual characteristics. [1] Expectedly, deficiency causes a significant impact to the mental, emotional and physiological health of those affected.

Deficiency impacts many aspects of overall health so it is important for men to recognise the signs and symptoms of deficiency and speak to their doctor if they expect they may have the condition.

Impact to sexual function

Reduced sex drive and erectile dysfunction

Changes and decrease in body hair

Decreased hair on the face and body

Emotional changes

Increased irritability and anger Feeling dissatisfied and depression

Decreased muscle mass

Less ability to exercise and feeling physically weaker when doing so


Extreme tiredness and falling asleep earlier

Development of anaemia

Decreased bone marrow function and resultant decreased red blood cell production

Increased risk of osteoporosis

Reduced bone mass and bone health

Weight gain

Increased fat, particularly around the abdomen


1. Omeed & Schwartz. Treasure Island (FL): StatPearls Publishing; 2021.
2. Dohle G et al. EAU Guidelines on Male Hypogonadism 2018. Available at:
3. Hackett G, Kirby M, Edwards D, et al. British Society for Sexual Medicine Guidelines on Adult Testosterone Deficiency, With Statements for UK Practice. The journal of sexual medicine. 2017;14(12):1504-1523.

INFO_1521 Date of Preparation: August 2022