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  • Shield labelled since 1996 Since 1996
  • Outline of two people Millions of users
  • Seal with a checkmark in the middle Made in Germany
  • Ruler with a rising growth curve Up to 1.9 in*
  • Warranty seal 2-year warranty
  • Outline of a doctor's stethoscope Clinically tested & confirmed
  • Arrow curving up and to the left 14-day return policy
  • Two growth arrows pointing upwards +0.98 IN*
  • Seal labelled since 1997 Clinically examined

*Results vary from individual to individual and therefore cannot be guaranteed.

Testicles

Active and fertile into old age

The testicles (singular: testis) are the internal sex organ of most sexually reproducing organisms. Sperm cells are produced in the testicles, which then form male sperm in humans together with the seminal fluid of the prostate.

In men, the testicles are also responsible for the production of the male sex hormone testosterone. A loss or serious illness of the testicles also results in a complete or partial loss of primary male characteristics (higher voice, reduced body hair, reduced sex drive, etc.) due to the lack of hormone production.

The male testicles remain active throughout

In contrast to women, the gonads in a man's testicles do not suddenly stop functioning when he reaches a certain age. In principle and in theory, a man can therefore remain fertile and sexually active throughout his life and into old age. Infertility (infertility - not to be confused with impotence or erectile dysfunction) that occurs with age varies from person to person and the exact causes have not yet been fully clarified.

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