Hair loss is a primary concern for both men and women. It’s when hair loss is persistent that you want to see your doctor. Your healthcare provider may be able to diagnose if your hair loss is caused by things like thyroid issues, stress, scalp infections, androgenic alopecia, or simply aging. Common causes include physical and emotional stress, pregnancy, diet, genetics, aging, certain haircare practices, medical conditions and medications. However, there are new advances in the field that can prevent and even reverse hair loss.