**3. Infertility reasons and treatment**

Clinically, there are two forms of infertility, physiological and pathological infertility. Infertile pairs; 40–55% infertility is the cause of women, 25–40% in men, 10% in both, and 10% in cases of unexplained reason.

Causes of infertility due to females are: 30–40% ovulatory dysfunction, 30–40% tubal peritoneal factor, 10–15% unexplained infertility, and 10–15% multiple factors together [12, 27]. While 15% of married couples have infertility, only 1–2% have sterility. There is a certain height of reasons for the woman here, because after the ejaculation, the function of the man ends for fertilization. Fertility, however, is not finished here but has just begun [26].

#### **3.1 Causes of physiological infertility**

Causes of physiological infertility are: infantile infertility, pregnancy infertility, lactation infertility, postmenopausal infertility, cyclic infertility, voluter infertility, and relative and social infertility.

