the most likely cause for miscarriage during the first three months of pregnancy is
Most miscarriages are considered random events not likely to recur. Most of the time, a specific cause for miscarriage cannot be identified, though up to 70 percent of first-trimester miscarriages, and 20 percent of second-trimester miscarriages, are caused by chromosomal anomalies. Other possible causes could include infection or exposure to environmental or industrial toxins.