Fertility is the ability to reproduce. Female fertility implies the presence of sexual organs without abnormalities: a uterus, fallopian tubes, and functional ovaries, the absence of hormonal abnormalities with regular menstrual cycles. In men, fertility involves the production of sperm in sufficient quantity and quality and the ability to ejaculate. Fertility has many factors, and is more or less influenced by the psychological state, quality of life, general health, diet, or medication. That is why an individual's fertility is rarely brought into question, but the fertility of the couple. Infertility is when a couple with frequent sexual contact cannot seem to get pregnant. The average time to conceive is 4 months, but it can be much longer despite the healthy reproductive capacity of the couple. An infertility evaluation may be taken after 18 to 24 months of regular intercourse without conception. In this case, additional tests are conducted. Infertility is different from sterility, which is the inability of a person to procreate.