Causes of Low T


What is Testosterone?

Testosterone is a hormone that is found in humans, both men and women and also other animals.

For men, testosterone is created in the testicles and for women testosterone is created in the ovaries; although the level of testosterone produced by men is much higher than in women. Testosterone levels rapidly increase during puberty and generally start to decline at around the age of 30.

Testosterone is an important hormone within the body and plays a major role in sperm production, mood and sex drive. It also affects red blood cell production, muscle and bone mass and fat is stored in the body in males.

Causes of Low Testosterone

Although Low Testosterone is not uncommon it is not a normal condition or something that you should ignore. Statistics have shown that within the US alone, Low Testosterone affects roughly four to five million men.

There are two types of hypogonadism (meaning the decline or absence of physiological activity or hormone secretion in the testes or ovaries) primary  and secondary hypogonadism.

Primary hypogonadism can be inherited or environment based (illness or accident) and refers to under-active testes; whereby the testes are not producing enough testosterone required for optimal health and growth.

Secondary hypogonadism can be caused by damage to the parts of the brain that control hormone production, which are the hypothalamus or pituitary gland.

The following are some of the many causes of why there could be a decline in testosterone production:


Adolescence and early adulthood are the times where testosterone levels are at their peak, however, these tend to decline at around the age of 30. Although age is a major contributor to a decline in Testosterone production, Low Testosterone can also be experienced in men under the age of 30.

If you think you’re experiencing Low Testosterone due to aging, book yourself a consultation with one of our experts for an in depth consultation to get to the root of what is causing the Low Testosterone and work on creating a bespoke treatment plan on getting you back to your optimal health.


There is a close correlation between Obesity and Low Testosterone, whereby men who suffer from obesity are more likely to have lower levels of Testosterone and men with lower levels of Testosterone are more likely to be susceptible to becoming obese. Obesity creates a decline in  levels of SHBG which is a sex hormone binding globulin that carries testosterone in the blood. Lower levels of SHBG means that there is less opportunity for testosterone to be carried in the blood.

If think that you are experiencing Low Testosterone due to Obesity; book yourself a consultation with one of our experts in order to create a tailor made plan for you to get back to your optimal health.


Infections such as the following can affect the level of testosterone that is produced:

HIV/AIDS – As this disease affects the pituitary, hypothalamus and testes, this disease can cause low levels of testosterone production.

Inflammatory Disease – Testosterone production can be affected by diseases that affect the hypothalamus and pituitary gland, such as tuberculosis, sarcoidosis and histiocytosis.

Mumps Orchitis – Adolescence and early adulthood are important times during ones life; if an individual suffers from an infection that affects the testicles and salivary glands during this period, testicular function and testosterone production could be dramatically affected as there could be substantial damage that could cause longterm testicular damage.


Stress not only affects our psychological and mental health, it also can also significantly affect our physical health. Symptoms between stress and Low Testosterone are very similar which could be linked by cortisol which is a stress hormone. Studies have shown that higher levels of cortisol suppresses testosterone. 

If think that you are experiencing Low Testosterone symptoms due to stress; book yourself a consultation with one of our experts in order to create a tailor made plan for you to get back to your optimal health.

Testical or Scrotum Injuries  

Injury to the testicles or scrotum can cause serious side effects. This area of a mans body is extremely sensitive and the smallest amount of damage to the nerves and vessels in that area can cause issues. Due to the positioning of the testicles as they are outside of the abdomen, they are more prone to facing injury. Hypogonadism can be  a symptom of damage to normally developed testicles, however, both testicles must face injury to impair testosterone production.

If you have faced an injury to your testicles or to your scrotum and think that you are experiencing Low Testosterone due to your injury; book yourself a consultation with one of our experts for an in depth consultation to work on creating a bespoke treatment plan on getting you back to your optimal health.


Pituitary Issues

The pituitary gland is a vital organ that is found at the base of the brain that acts as the “central production hub” of the body controlling the production of hormones and instructing their travel through the body. Within the hypothalamus the Gonadotrophin releasing hormone is made, this hormone acts as a stimulant to the pituitary gland to produce Gonadotrophins and Luteinising hormones. Gonadotrophins are hormones that stimulate the testes to produce testosterone. Damage to the pituitary or the hypothalamus therefore in turn affects the production of testosterone.

Effect of Radiation or Chemotherapy

Radiation and Chemotherapy are powerful treatments that are used in serious illnesses. However, they tend to strip the body and jolt it out of its normal or optimal functioning processes. Although there shouldn’t be any long term effects to the testes with chemotherapy or radiation,it does cause the level of testosterone to drop and can cause issues to the nerves that cause an erection. Studies have found that 15% of male cancer survivors have suffered from testosterone deficiency as a late side effect.

Fortunately, with treatments like Testosterone Replacement, this drop and its side effects can be treated effectively. If you think that you are experiencing Low Testosterone due to exposure to radiation or after chemotherapy, please book an appointment with one of our experts for a detailed consultation and to begin your journey to optimal wellness.

Head Trauma

As the pituitary gland and the hypothalamus are located within the brain, it is understandable that head trauma can affect Testosterone production. Studies have shown that injuries such as Traumatic Brain Injury (TBI) can cause substantial risk to the function of the pituitary gland, hormones and general health.

The most common side effects are deficiencies in Gonadotropin and Somatotropin. As stated previously Gonadotropin is an important hormone in stimulating the production of Testosterone, therefore a deficiency in the production of Gonadotropin causes Low Testosterone.

If you have experienced injuries such as falls, gunshot injuries, exposure to chemicals, car or motorcycle accidents where you’ve suffered head trauma, been around repetitive gunfire, lack of oxygen, stroke or any other form of head trauma and think that you are experiencing Low Testosterone symptoms because of this, please arrange a consultation with one of our team members to begin your treatment plan.

Steroid Abuse

Athletes and body builders are known to use Androgenic Anabolic Steroids (AAS) which are synthetic derivatives of testosterone; they use these in an unregulated manner in order to enhance their strength and muscular size. Steroid abuse is known to suppress endogenous hormone production in men and is known to shrink glands that produce hormones such as the testes. Steroid abuse can also cause weakened sexual functioning and infertility.  Research has shown a significant difference in the amount of testosterone in weight lifters who used steroids against weight lifters hadn’t used steroids, whereby users had lower amounts of testosterone.

If you have used Anabolic Steroids for body building or weightlifting and think that you are suffering from Low Testosterone because of this, please book a consultation with one of our experts to discuss your treatment options and start your journey to recovery.

Certain Medications

The most common causes for Low Testosterone today are prescription and non-prescription drugs can also cause Low Testosterone. The following drugs have the highest rates of impact on your testosterone levels;

Statins: these are drugs that are used to lower cholesterol, however, as cholesterol is an important component in sex hormones, therefore causing a decline in Testosterone.

Opioids are used in various medications and can be prescription or non-prescription, however, long-acting and short-acting opioids can cause a decline in Testosterone.

Hypertension medication and Beta-Blockers: Low testosterone can be caused by the reduction of blood pressure through diuretics and beta-blockers.

Anti-Anxiety medication and Antidepressants: Testosterone can be dramatically lowered through some anxiety and depression drugs.

Alcohol and Illegal Drug abuse: Drug and alcohol abuse affects the body in its entirety, it also causes a significant decrease in your testosterone.

Inherited Conditions

Unfortunately, humans have the ability to pass on undesirable conditions to their offspring. Inherited conditions can contribute to Low Testosterone. Conditions such as Klinefelter’s Syndrome (male baby is born with 3 sex chromosomes, X, X, Y), Undescended Testicles (testicles failing to descend from the abdomen before birth) and Hemochromatosis (too much iron in the blood).

If you suffer from any of these conditions, Los Angeles Testosterone Center can create a unique treatment plan tailored specifically to your needs.

Surgery / Vasectomy

Research has shown that vasectomies do affect your ability to produce Testosterone and in turn lead to Low Testosterone production. There is a likely-hood of your body creating an autoimmune response to a vasectomy and treats your sperm as a foreign object and attacks your sperm whilst still inside your testes – therefore affecting your ability to produce Testosterone.

If you think that you are experiencing symptoms associated with Low Testosterone after a vasectomy, please book yourself a consultation with one of our highly experienced consultants at Los Angeles Testosterone Center and begin your journey to wellness and optimal health.

If you’re experiencing symptoms associated with Low Testosterone and you have suffered from any of the listed causes, please book yourself a consultation with one of our highly experienced consultants at Los Angeles Testosterone Center and begin your journey to wellness and optimal health.

Speak to the team and book yourself a FREE consultation with one of our expert consultants.


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