1. The fallopian tubes are blocked or damaged

This damage is usually caused by salpingitis (inflammation of the fallopian tubes). Besides making it difficult pregnancy, salpingitis can also lead to pregnancy outside the womb (ectopic). Sexually transmitted diseases (STDs) chlamydia can clog the fallopian tubes which complicate the release of the egg. Approximately 70% blockage of the fallopian tubes caused by chlamydia infection.

2. Endometriosis

Endometriosis is the abnormal growth of tissue implants outside the uterus, which normally only grow in the uterus. Endrometriosis can hinder the process of conception and attachment of the embryo in the uterine wall.

3. Hormone Abnormalities

Hormone deficiency lutein and follicle stimulating hormone can cause the egg can not be released (ovulation). Abnormalities of the hypothalamus-pituitary gland can also cause hormonal anomalies that prevent ovulation.

4. Pituitary Tumors

These are usually benign tumors that can damage cells in the pituitary gland releases hormones that make the menstrual cycle in women halted or decreased sperm production in men.

5. Excess prolactin (Hyperprolactinemia)

Prolactin is a hormone that stimulates milk production. Excess prolactin can interfere with ovulation. If a woman does not spend a lot of milk even though you are breastfeeding, it is likely he suffered from hyperprolactinemia.

6. Polycystic ovary syndrome (PCOS).

This syndrome is characterized many ovarian cysts and the production of androgens (male hormones) excessive, particularly testosterone. As a result, hard boiled eggs and trapped in the follicle (no ovulation).

7. Premature Menopause

Premature menopause occurs when women stop menstruating and follicle shrinks ovaries before age 40 years. Immune disorders, radiotherapy, chemotherapy and smoking can trigger this disorder.

8. Uterus tumor (Uterine Fibroids)

Benign tumors in the uterine wall is often found in women aged 30-40 years. These tumors can cause infertility if blocking the fallopian tubes and attachment of the fertilized egg in the uterine wall.

9. adhesion

Adhesion (adhesion) is a group of interrelated network of scars that brings together two surfaces of organs that are normally mutually exclusive. Adhesion involving the fallopian tubes due to infection or surgery may block the function of the ovaries and fallopian tubes.

10. Thyroid gland abnormalities

These abnormalities result in excess or deficiency of thyroid hormones which disrupt the menstrual cycle.

11. Anatomy of Congenital Abnormalities

Congenital abnormalities of the reproductive organs can cause infertility. Abnormalities called Mullerian agenesis is characterized by the development of the vagina or uterus. Women with this disorder are still able to have children through IVF with the “hire” another woman’s uterus.

12. smoke

Smoking can harm the ovaries and reduce the number / quality of the egg. Research shows women smokers tend to experience menopause earlier.

13. stress

Neurotransmitters (chemical messengers) to work on the hypothalamus gland to control the reproductive hormones and stress. High levels of stress hormones that can disrupt the reproductive system.

14. Too Thin or Too Fat

Women who are too thin, such as marathon athletes or people with anorexia, can lose their reproductive function. Obesity can lead to infertility in various ways. Policystic ovarian sydrome (PCOS), for example, is more common in women who are overweight.

15. Environmental factors

Herbicides, pesticides, industrial waste and other pollution can affect fertility. Phtalate, chemicals to soften the plastic, could be expected to interfere with the function of the body’s hormones.