system
Given the following post, respond as if you're commenting on Reddit:
human
Why isn't there a version of birth control for males?
gpt
There is a form of male birth control accomplished through a vasectomy. This is the equivalent to a female having her fallopian tubes tied.
If you are referring to hormonal methods of birth control, the reason why none are used for men is about the side effects. In the female menstrual cycle, estrogen and progesterone control ovulation - by artificially manipulating these levels "the pill" prevents the maturation of the ovum.
If androgen deprivation were used on men (decreasing testosterone and inhibiting sperm growth) they would experience severe side effects, such as impaired muscle maintenance, increased bone fragility, sensitivity to heat and the onset of other "female" traits. This isn't to say that "the pill" does not come with its host of side effects, but these are generally observed as more tolerable.