New Delhi, Jan. 29 -- If you are pregnant, worrying about the risks of pregnancy loss or a miscarriage may cloud your mind sometimes. You must know that most of the times, a miscarriage happens for reasons that are beyond your control. In fact, it is often difficult to pinpoint the exact cause behind pregnancy loss. However, learning the common causes of a miscarriage may help you relax and improve your chances of having a healthy and fruitful pregnancy.

Here are some of the most common causes of pregnancy loss:

1. Abnormal chromosomes

An abnormal number of a baby's chromosomes is responsible for more than half of the miscarriages that happen in the first 12 weeks. Chromosomes are determinants of your baby's unique traits such as hair ...