Fertility

Fertility is the ability of people or animals to produce healthy offspring in abundance. In the English language, the term was originally applied only to females, but increasingly is applied to males as well, as common understanding of reproductive mechanisms increases and the importance of the male role is better known. The opposite of fertility is infertility. Human fertility depends on factors of nutrition, sexual behavior, culture, instinct, endocrinology, timing, economics, way of life, ...