Hair loss is a common problem among older women, and there are several factors that can contribute to it. Here are some of the most common causes of hair loss in older women:

1. Female-pattern hair loss (FPHL): This is the most significant cause of hair loss in women, affecting about one-third of susceptible women, which equals out to some 30 million women in the United States. FPHL is a genetic condition that causes hair to thin and fall out gradually over time. It usually starts with a widening of the part in the hair and can progress to more noticeable hair loss on the top of the head.

2. Hormonal changes: During menopause, women may experience changes in their hormone levels, including a decrease in estrogen and progesterone. This can lead to hair becoming finer (thinner) because hair follicles shrink. Hair grows more slowly and falls out more easily in these cases.

3. Medical conditions: Certain medical conditions can cause hair loss in women. These include thyroid disorders, anemia, and polycystic ovary syndrome (PCOS) . Inflammatory conditions affecting the scalp, such as eczema, psoriasis, or frontal fibrosing alopecia, can also cause hair loss.

4. Medications and treatments: Some medications and treatments can cause hair loss in women. These include chemotherapy, radiation therapy, and certain medications used to treat high blood pressure and gout.

5. Stress and trauma: Physical or emotional stress, as well as trauma to the hair (such as excessive pulling or styling), can cause hair loss in women.

If you are experiencing hair loss, it is important to talk to your healthcare provider to determine the underlying cause and develop an appropriate treatment plan.