What are the most common causes of multiple misscarraige in a woman?

Long list: Bad luck is the most common cause meaning there is no clear cause when testing occurs. Genetic abnormalities, clotting disorders, antiphospholipid antibody syndrome, uterine abnormalities, immune system disease and smoking are a few of the causes.

Genetic: Recurrent or enancy loss can be broken down to the following: 1. Genetic also called aneuploidy-95% of the time- too much or too little genetic material in the pregnancy and 5% because the parents who may have gene rearrangements 2. Uterine malformations either from birth or develop with age 3. Hormonal abnormalities 4. Infections 5. Clotting or rejection factors.