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Semen extender is a liquid diluent which is added to semen to preserve its fertilizing ability. It acts as a buffer to protect sperm cells from their own toxic byproducts, as well as protecting the sperm from cold shock and osmotic shock during the chilling and shipping process (the semen is chilled to reduce metabolism).
Penis enlargement, or male enhancement, is any technique aimed to increase the size of a human penis. Some methods aim to increase total length, others the shaft's girth, and yet others the glans and foreskin size. [1] Techniques include surgery, supplements, ointments, patches, and physical methods like pumping, jelqing, and traction. [1]
Here’s a fun fact, actually: According to Johnson, the main active ingredients of erectile dysfunction medications Cialis and Viagra—tadalafil and sildenafil—work by lowering blood pressure.
The most common sign of hypospermia is a low volume of semen during ejaculation. [1] The diagnosis is confirmed when one has a semen volume of less than 2.0 mL on at least two successive spermograms. [2] If hypospermia is caused by retrograde ejaculation, sign include cloudy urine after orgasm. There may not be any symptoms of hypospermia ...
Over time, insulin resistance and high blood sugar—two characteristics of diabetes—can damage blood vessels and impact nitric oxide production, which L-arginine supplements may help counter ...
A 1992 World Health Organization report described normal human semen as having a volume of 2 mL or greater, pH of 7.2 to 8.0, sperm concentration of 20×10 6 spermatozoa/mL or more, sperm count of 40×10 6 spermatozoa per ejaculate or more, and motility of 50% or more with forward progression (categories a and b) of 25% or more with rapid ...
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When controlling for the age of the female partner, comparisons between men under 30 and men over 50 found relative decreases in pregnancy rates between 23% and 38%. [ 55 ] A 2014 review indicated that increasing male age is associated with declines in many semen traits, including semen volume and percentage motility.
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