Causes of Miscarriage
There are a lot of reasons why women have miscarriages. It can be because of a disease the woman has, infertility, issue, stress, biological concerns like the mother's age,but to identify each and everyone of them it will just be a little difficult.
I guess one main issue usually is when a woman has undiagnosed type 2 diabetes. Not all women realize that if you are diabetic there is a big chance you may miscarriage more than one time. The reason uncontrolled blood sugar can cause miscarriages. Since it also causes hypertension, diabetes can cause a lot of complications during pregnancy thus causingthe miscarriage.
Age makes a huge difference too. Genetically a younger egg (meaning a younger mother) may produce healthier and much viable eggs. Cells develop accordingly and less chances of acquiring genetic defects.
More importantly genetic problems are also considered if your family has a history of miscarriages or fertility problems then it is possible you might have the same problems too.
To aviod miscarriages be on top of your health. Talk to your doctor.