8 signs of low testosterone

Testosterone is the main male sex hormone. However, it is not only responsible for sexuality, it also affects many important body functions. The more older men get, the less hormone they produce. But how do you know you have a testosterone deficiency?

First of all, women also produce testosterone in the ovaries. However, in much smaller quantities than men. This is why women are far less likely to be affected by testosterone deficiency and associated ailments. From the age of 30, the testosterone level in men slowly decreases by about one to two percent per year.1 Therefore, any complaints become noticeable only gradually. However, especially in the 60+ age group, about 20% of men suffer from testosterone deficiency.2 How do you recognize him? FITBOOK has collected the eight most important signs of a testosterone deficiency.

How is testosterone deficiency diagnosed?

Testosterone deficiency can only be diagnosed by a doctor’s blood test. Because almost all the symptoms that indicate a hormone deficiency can have other reasons as well. Furthermore, the reduction of testosterone production in the testicles is part of the aging process in men and is therefore a completely natural process. Experts recommend treating a testosterone deficiency only if the quality of life suffers. Or the deficiency leads to health problems.

Since the testosterone level fluctuates greatly throughout the day, doctors usually measure it in the morning when it is at its highest. It comes in nanomoles per liter (nmol / l) or in nanograms per milliliter (ng / ml). The normal range is relatively wide: values ​​between 10 and 40 nmol / l or between 3.5 and 11.5 ng / ml are in the green range. However, if you are at the lower bound of the values, you may already notice complaints.

Also interesting: a protein-rich diet can significantly reduce testosterone

There are many reasons for testosterone deficiency

  • natural aging process
  • Stress at work or in private life
  • unhealthy diet
  • sleep disorders
  • Diseases such as diabetes, cancer, kidney failure
  • taking anabolic steroids
  • Heavy drug use: alcohol, nicotine, etc.
  • certain drugs

8 symptoms that can indicate low testosterone

In particular, the combination of multiple symptoms together can be a strong indicator of a testosterone deficiency. If these symptoms persist for more than two weeks, it is advisable to see a doctor. Because it might not be a testosterone deficiency behind it, but a disease that needs to be treated.

Also Interesting: Are Men With High Testosterone Levels More Successful?

1. Loss of libido – no desire for sex

Whether as a couple or single: Anyone who finds that their desire for sex has been significantly reduced over a longer period of time or that they have erection problems can be an indicator of a testosterone deficiency. Behind it can also be stress, relationship problems and other reasons.

2. Lack of thrust, less energy

Men with testosterone deficiency often complain of a lack of pulse. No wonder, after all, the male sex hormone is responsible for our powerful and energetic being. One of the main reasons testosterone is taken as a doping to improve the performance of professional and amateur athletes. So, if you have a sharp drop in performance during sports and find yourself running out of energy in everyday life, you may have low testosterone.

Also Interesting: Does Testosterone Deficiency Cause Serious Illness?

3. More fatty tissue on the abdomen, narrow shoulders

The ideal men’s optics looks like this: broad shoulders, narrow waist. If you look in the mirror and see exactly the opposite – narrow shoulders and fat on your stomach – you may have a testosterone deficiency. In particular, if the appearance has gone from quite fit to quite chubby over the years, this may be an indication of testosterone deficiency.

Also interesting: scientifically proven methods to reduce dangerous belly fat

4. Depressed moods

Both the lack of testosterone and the symptoms it causes, such as loss of libido, lack of drive and weight gain, can lead to depressive moods. You are in a bad mood, aggressive and dissatisfied with yourself and with life. Depression is a serious topic and therefore it is always important to see a doctor if you no longer see any meaning in life. This can also be due to other reasons besides a testosterone deficiency.

Also interesting: possible symptoms of depression

5. Decrease in body hair

In men with a lack of testosterone, body hair also changes. It becomes lighter, especially on the face in the armpits and in the pubic hair area.

6. Altered metabolism

Men who are overweight, have type 2 diabetes, and have a metabolic syndrome are much more likely to have testosterone deficiency. Metabolic syndrome occurs when obesity, hypertension, high cholesterol and high blood sugar levels occur in combination. According to studies, around 20-40% of those affected also have a testosterone deficiency.3

Also Interesting: 8 Mistakes That Slow Your Metabolism And Prevent Weight Loss

7. Reduced bone density

Low bone density up to osteoporosis is also an indicator of a testosterone deficiency. So, if you fracture a bone soon after a minor injury, it is possible that your bone strength is reduced due to a lack of testosterone.

8. Greater chest development in men

When the mammary glands enlarge in men, it is referred to as gynecomastia. A tendency for breast development is often noted, especially in older men, and this is not caused by sports. This can be an indication of hormonal changes in the body. Testosterone deficiency is often accompanied by an excess of estrogen.

Also interesting: For the over 40 dream body – the 7-point plan for men

Treatment options for testosterone deficiency

In a conversation with the doctor, it can be clarified whether therapy is necessary for low testosterone levels or whether a change in lifestyle will help to slightly increase the testosterone level. FITBOOK has already explained how to increase testosterone production naturally.

If the quality of life suffers a lot, there is the possibility of artificially increasing the level of testosterone with gel to be applied to the skin or monthly injections. However, it should be noted that it is an intervention in the sensitive hormonal balance of the body. For example, testosterone replacement can increase the risk of prostate cancer or accelerate the development of undetected tumors. Therefore, the doctor must clarify in advance that you are not a patient at risk and that the prostate does not show any abnormalities.


  • 1. Travison, TG, Araujo, AB, Kupelian, V. et al. (2007). The relative contributions of aging, health and lifestyle factors to the decline in serum testosterone in men. The Journal of Clinical Endocrinology and Metabolism.
  • 2. Kaufman, JM, Vermeulen, A. (2005). The decline in androgen levels in elderly men and its clinical and therapeutic implications. Endocrine Reviews.
  • 3. Haring, R., Ittermann, T., Völzke, H. et al. (2010). Prevalence, incidence and risk factors of testosterone deficiency in a population-based cohort of men: results from the Pomeranian health study. Elderly male.
  • Patient testosterone in older men (accessed 22 June 2022)

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