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The mention of testosterone boosters usage brings up an image of a weight lifter or body builder and usually carries negative connotations.

In the last several years, and, more specifically, with the development of testosterone in a form that simplifies administration and dosage, our understanding of low testosterone in men has changed. Science has proven that raising testosterone helps promote muscle growth, enhance mood and increase libido. Recent estimates show that approximately 13 million men in the United States experience testosterone deficiency and less than 10% receive treatment for the condition. [1] How exactly do testosterone boosters work? Are they healthy? Are they even legal?


What Is Testosterone?

Testosterone is a powerful anabolic hormone that stimulates and controls the development of different organs such as muscle, bone, skin, sex organs, and other masculine physical features. Males produce testosterone in the testes through a group of cells known as the Leydig cells. They begin secreting high doses of testosterone during puberty to trigger the growth of lean muscle mass, sex organ development, bone formation and higher energy levels. Testosterone levels peak during a man's early- to mid-twenties.[2]

Testosterone: Effects On Humans

Prenatal effects:

  • Genital virilization 
  • Development of prostate and seminal vesicles

Early postnatal effects:

  • Adult-type body odor
  • Increased oiliness of skin and hair, acne
  • Axillary hair
  • Accelerated bone maturation

Advanced postnatal effects:

  • Increased libido and erection frequency
  • Pubic hair extends toward umbilicus
  • Facial hair
  • Chest hair
  • Subcutaneous fat in face decreases
  • Increased muscle strength and mass
  • Deepening of voice
  • Growth of the Adam’s apple
  • Growth of spermatogenesis tissue in testes, male fertility
  • Shoulders widen, and rib cage expands
  • Completion of bone maturation and termination of growth.[2]

As a man ages, the amount of testosterone produced by the Leydig cells decreases. Science has proven that by the age of 60, the average man will have lost nearly 50% of his testosterone supply.

Not only age interferes with testosterone production. Other factors such as stress, lack of sleep, physical inactivity, the use of prescription medication and drinking alcohol can also cause testosterone levels to decline significantly. 

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