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  2. How Testosterone Affects the Size of Your Penis - AOL

    www.aol.com/testosterone-affects-size-penis...

    IT DOES MAKE sense in a way that testosterone would increase penis size, because at one point in your life, it did. But the facts are different as an adult. But the facts are different as an adult.

  3. Testicular atrophy - Wikipedia

    en.wikipedia.org/wiki/Testicular_atrophy

    Testosterone is in charge of the growth and production of many sexual attributes in males, including facial hair, pubic hair, penis size, vocal and muscle mass changes, regulation of sex drive, and sperm production. Normal testosterone levels in males who have not yet hit puberty are less than 20 nanograms per deciliter.

  4. Human penis size - Wikipedia

    en.wikipedia.org/wiki/Human_penis_size

    But after puberty, administration of testosterone does not affect penis size, and androgen deficiency in adult men only results in a small decrease in size. [52] Growth hormone (GH) and insulin-like growth factor 1 (IGF-1) are also involved in penis size, with deficiency (such as that observed in growth hormone deficiency or Laron syndrome ) at ...

  5. Increasing penis sizes are worrying doctors. Here’s why ...

    www.aol.com/increasing-penis-sizes-worrying...

    A new study shows that average erect penis size has increased significantly over the past three decades using data from more than 55,000 men around the world. ... sperm counts and testosterone ...

  6. Testosterone - Wikipedia

    en.wikipedia.org/wiki/Testosterone

    Testosterone is the primary male sex hormone and androgen in males. [3] In humans, testosterone plays a key role in the development of male reproductive tissues such as testicles and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.

  7. What Is Low Testosterone & What Causes It? - AOL

    www.aol.com/low-testosterone-causes-125700734.html

    But they can also affect men with low testosterone due to hypothalamus dysfunction. Remember: the hypothalamus is the part of the brain that signals the testicles to make testosterone. It also ...

  8. Sexual differentiation in humans - Wikipedia

    en.wikipedia.org/wiki/Sexual_differentiation_in...

    Male levels of testosterone directly induce growth of the penis, and indirectly (via DHT) the prostate. Alfred Jost observed that while testosterone was required for mesonephric duct development, the regression of the paramesonephric duct was due to another substance.

  9. 4 Things Every Man Should Know About Testosterone - AOL

    www.aol.com/4-things-every-man-know-185700739.html

    Testosterone affects your brain and body. While we may associate solid levels of testosterone with muscle growth and libido, it has implications for more than just physical wellbeing.

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