Which hormone is highest when a woman is most fertile?

A woman's fertility peaks between the late teens and early 30s. Why fertility starts falling at 35 is still unclear. Fertility peaks between the late teens and early 30s. read more

These high estrogen levels trigger a sudden increase in another hormone called luteinising hormone (LH). The ‘LH’ surge causes the release of the mature egg from the ovary - this is ovulation. Ovulation normally occurs 24 to 36 hours after the LH surge, which is why the LH surge is a good predictor of peak fertility. read more

Most women can only conceive five to six days out of every month. Before a pregnancy can take place, one of your ovaries must release a mature egg. This is called ovulation. read more