Testosterone is a male sex hormone, that plays a massive role in men’s sexual growth and reproduction. However, both women and men produce this hormone.

Here Is A List Of 25 Interesting Facts About Testosterone:

#1 Testosterone belongs to a class of male hormones called androgens, that are occasionally called anabolic steroids or steroids.

#2 Testosterone production starts to increase substantially during puberty and begins to dip after age 30 or so. An estimated 2 out of 10 men older than 60 years have low testosterone, according to the American Urological Association.

#3 The National Institutes of Health regards testosterone as the most important male hormone.

#4 Healthy men who have gone through puberty have 20 times the levels of testosterone compared to a healthy female.

#5 A pregnant woman will have 3 to four times more testosterone than a healthy, non-pregnant woman.

#6 Your testosterone levels tend to be highest in the morning and lowest at night.

#7 Most of the testosterone that the testes produce is not used by the body. But, it is inactivated by the liver and excreted through the kidneys.

#8 In males, about 95 percent of testosterone is produced in testicular Leydig cells (). The other 5 percent is formed from DHEA, an endogenous steroid hormone.

#9 In females, half of the testosterone is produced through the conversion of adrenal androgens in other parts of the body. The remainder is produced by the ovaries and adrenal glands.

#10 Testosterone levels are controlled by the pituitary gland (the “master gland” because it controls functions of other endocrine glands) and brain. Follicle stimulating hormone (FSH) and luteinizing hormone (LH) are the two vital messenger hormones produced by the pituitary gland which act on the testes. Once produced, the hormone moves through the blood to carry out its functions.

#11 The blood level of testosterone in males is 250 to 1000 nanograms per deciliter, whereas the normal range of testosterone in females is about 15 to 65 nanograms per deciliter.

Functions

#12 In men, testosterone is thought to play a number of important roles, such as:

  • sperm production;
  • the production of red blood cells;
  • sex drive (libido);
  • muscle mass and strength;
  • bone growth and strength;
  • fat distribution;
  • the appearance of facial and pubic hair starting at puberty;
  • the deepening of the voice during puberty;
  • the development of testes and the penis.

#13 In women, testosterone levels affect the function of many female reproductive organs including the uterus, clitoris, mammary gland, ovaries, and vagina. And perhaps most important is its effect on a woman’s sex drive or libido.

#14 Testosterone may help women and men regulate pain levels.

Low Testosterone Levelsa man with long hair

#15 Testosterone deficiency is a very specific clinical condition which is defined by the presence of a set of specific symptoms and signs which occur as a result of decreased production of testosterone.

#16 Symptoms may include:

  • not doing well at work;
  • reduced sex drive;
  • poor focus;
  • reduced erectile function;
  • a difficulty with finding words to say;
  • loss of body hair;
  • poor memory;
  • less beard growth;
  • lower endurance;
  • lower physical strength;
  • lower energy level;
  • symptoms of depression;
  • obesity;
  • feeling very tired all the time;
  • loss of lean muscle mass.

#17 Studies have also shown that low testosterone levels are strongly associated with a higher risk of age-related dementia or Alzheimer’s disease.

#18 Women with low testosterone levels might have:

  • loss of libido;
  • lack of motivation;
  • tiredness;
  • osteoporosis.

What Causes Testosterone To Decline

man taking a bath in his home#19 Testosterone levels naturally decrease by about 1% a year starting at age 30.

#20 Other factors contribute to testosterone decline, including:

  • kidney disease;
  • diabetes;
  • liver disease;
  • obesity;
  • regular alcohol consumption;
  • poor diet;
  • the use of recreational drugs;
  • emotional stress;
  • major surgery;
  • chemotherapy and other cancer treatments;
  • abnormally high levels of iron;
  • undescended testicles;
  • lack of sleep;
  • problems with the pituitary gland;
  • Klinefelter syndrome (a chromosomal condition in boys and men which can affect intellectual and physical development);
  • Kallmann syndrome (a condition that is characterized by delayed or absent puberty);
  • use of certain medications;
  • smoking tobacco;
  • being underweight;
  • exposure to environmental pollutants.

#21 Providing the remaining testicle is healthy and can produce enough testosterone to make up for any deficit, having a unilateral orchidectomy should not affect the overall circulating testosterone level in the body.

#22 Blood tests and a healthcare professional’s evaluation can help determine whether or not testosterone levels are at an ideal reference ranges and if treatment would be effective.

Testosterone Replacement Therapy (TRT)

#23 You may need testosterone replacement therapy if you have low-T.

#24 Testosterone deficiency can be treated by:

  • injectible pellets;
  • intramuscular injections;
  • mucoadhesive material applied above the teeth;
  • testosterone gel;
  • testosterone patch, worn either on the scrotum or on the body.

#25 Many men report an improvement in mood from testosterone replacement as well as an improvement in sex drive, energy level, and quality of erections.

References

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2544367/
https://www.sciencedaily.com/releases/2018/06/180625122437.htm