Causes of Hair loss
There are many causes of scalp hair loss, and they differ in men and women. Studies show that losing up to 100-150 hairs per day is normal.• Human hair naturally grows in three phases: Anagen is the active or growing phase. Catagen is a short phase during which hairs begin to break down. Telogen is the resting phase. About 10% of our hair is at resting stage at one time, hence are not growing and ready to shed in normal cases.• In general, most hair loss may or may not be associated with systemic or internal disease, or occasionally poor diet a frequent factor.• Hair may simply grow thin as a result of predetermined genetic factors, family history, and the overall aging process. Many men and women may notice a mild and often normal physiologic thinning of hair starting in their thirties and forties.• Normal life variations including temporary severe stress, nutritional changes, and hormonal changes like those in puberty, pregnancy and menopause may cause a reversible hair loss.• Several health conditions, including thyroid dysfunctions and iron deficiency anemia, can cause hair loss.• Several immune suppression medications including those drugs used in chemotherapy cause hair loss. Complete hair loss often occurs after a course of major chemotherapy for cancer. Usually, hair grows back after six to 12 months.• Certain conditions of scalp like fungal infections, dandruff and Seborrheaic Dermatitis also damage the hair roots and cause hair fall.
