Over weight-this happens to those that eats too much 

Under- weight women need to each to maintain a normal weight balance, it also cause problem during conception.


Hormonal imbalance - this causes epileptic  menstrual flow as a result of problem with hormonal system. this give problem during conception

Autoimmune- This is when a body immune system turns back and attack its cells. this can hinder fertility

Medication-Prescribed or self-prescribed drugs can cause infertility.
Smoking and Drinking-the carbon from smoking battles with the blood oxygen which makes it incompetent to participate well during conception. while chemical in alcohol makes women egg to be infertile