menopause in women

Menstruation

may or may not take place.

fallopian tube

In females there may be blockages in the that prevent an ova reaching the uterus, the blockage will also prevent sperm from reaching the egg.

levels of prolactin

In women hypothyroidism can cause increase in the which inhibits the FSH production.

Sperm

are introduced into uterus at the time of ovulation.

Oligo ovulation

where ovulation is irregular and may have a menustrual cycle that is longer than normal.

contraceptive pill

There is no for men on the market though there have been several types that have undergone medical trails.