Age - the ability to conceive starts to fall around the age of 32 years.
Smoking - smoking increase the risk of infertility in both men and women. Smoking during pregnancy increase the chance of pregnancy loss. Passive smoking has also linked to lower fertility.
Alcohol - any amount of alcohol consumption can affect chance of conceiving.
Obesity - this can increase the risk of infertility in women as well as men.
Eating disorder - if an eating disorder leads to serious weight loss can increase infertility.
Diet - deficiency of folic acid, iron zinc, vitamin b 12 decrease fertility.
Sexual transmitted infection - chlamydia can damage the fallopian tubes which cause infertility.
Absence or blockage of fallopian tubes - egg and sperm meet in the fallopian tubes as there is not site of fertilization which is also one of the main reasons of infertility.
Ovulation disorder - to get pregnant, your ovaries must produce and release an egg, a process known as ovulation. Ovulationdisorder occurs when ovulation is disrupted or absent. This becomes the one of the leading causes of female infertility.
Endometriosis - endometrial tissue appears outside the uterus and cause pelvicpain,especially associated with menstruation. This effect implantation of fertilized egg which cause infertility.
Lack of cervix mucus - inability of cervix to produce an adequate amount of mucus to allow the sperm to travel
Unexplained infertility - infertility is said to unexplained when abnormalities are present but not detected by any present methods.
Pcod/Pcos - In women who have pcod or pcos, there is an imbalance in female sex hormones. This may prevent the development and release of mature eggs. Without a mature egg, neither ovulation nor pregnancy can occur. Even if ovulation occurs, an imbalance in hormones may prevent the lining of the uterus from developing properly to allow for implantation of the fertilized egg.