There are 100,000 hair strands in our head and it is considered very normal to break 50 to 100 fibers in a day. But when more hair breaks than this, it can lead to baldness and you need to do something about it. A variety of environmental influences, aging, too much stress, excessive smoking, nutritional deficiencies, hormonal imbalances, genetic factors, scalp infections, incorrect or chemically rich hair products, certain medications and thyroid disorders, autoimmune diseases, polycystic ovarian syndrome (PCOS), iron deficiency anemia, and chronic diseases can be factors for hair loss.