Some daily hair loss is normal for everyone. The average person sheds 50 to 100 strands of hair a day. When a person sheds significantly more, their hairline recedes, their scalp shows through the crown, or their part widens, they have abnormal hair loss. While hair genetics loss and balding is more common in men, women are almost as likely to experience thinning hair. Many factors contribute to hair loss in women, both physiological and psychological. The following are the five main causes for loss of hair in women.

Thinning and receding hair is often a hereditary trait, seen in a woman's maternal line. Female-pattern hair loss or androgenetic alopecia is the most common genetically inherited trait, causing the hair on top of the woman's crown to thin.

Stress. Many types of stress, both psychological and physical, can result in hair loss. Any severe trauma to the body, nutritional deficiencies caused by illness or stringent dieting, or emotionally traumatic life events can cause hair loss and thinning even months later.

Hormonal Changes. Fluctuations or imbalances in hormones can result in temporary hair loss in women. A few of the most common conditions that cause hormonal changes include pregnancy, childbirth, perimenopause, and thyroid gland problems.

Medications. Many medications can cause temporary patchy hair loss and thinning in women. Any medication that alters hormone levels, such as birth control pills, has the potential to cause hair loss. Some forms of chemotherapy have also been known to contribute to loss of hair. Other medications such as antidepressants and anticoagulants may have hair loss as a side effect, as well as medications used in the treatment of hypertension, high blood pressure and other heart problems, or arthritis. Ingesting too much Vitamin A can also result in hair loss.

Medical Conditions. Any condition that causes hormone fluctuations, such as polycystic ovary syndrome (PCOS), can result in hair loss. Autoimmune disorders where the body's own immune system attacks the hair follicles can cause sudden patchy loss of hair. Scalp infections such as ringworm and skin conditions such as psoriasis and seborrheic dermatitis also may result in hair loss. Anemia weakens hair follicles and contributes to thinning hair.

Hair loss can be traumatic, hurting a woman's self-esteem and self-image. Women who are losing an abnormal amount of hair or are concerned about thinning should always consult their physician. With proper treatment, hair loss can be arrested and even reversed in many instances. No matter what the cause of hair loss, women should take steps to ensure their health and their emotional well-being.