What are some common causes of thinning hair in women?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Thinning hair in women is often caused by female pattern hair loss (androgenetic alopecia), chronic stress, hormonal shifts, thyroid disorders, iron deficiency, or autoimmune conditions like alopecia areata. Identifying the underlying cause is essential, as treatment varies widely depending on the trigger.

Because hair thinning can signal anything from a simple nutrient gap to a treatable medical condition, guessing your cause can delay real results. Take a free, instant, online symptom check to help pinpoint likely causes and clarify your next steps—before thinning progresses further.

Reviewed for medical accuracy: 07/15/2026

Quick answers

Frequently Asked Questions

4 answers

The most common questions women ask Ubie

Concerned about your symptoms?

Start a symptom check

Explanation

Thinning hair in women can happen for many reasons. One common cause is female pattern hair loss, which is a gradual thinning on the top of the head. This type of hair loss often runs in families.

Other causes include:

Stress: High levels of stress can lead to hair shedding.
Medical conditions: Conditions like thyroid problems or hormonal changes, such as during menopause, can also lead to hair thinning.
Nutritional deficiencies: Not getting enough vitamins and minerals can affect hair health.

Understanding the cause of thinning hair is important for finding the right treatment. If you are concerned about hair loss, you can start by using a free AI-powered symptom checker to help identify potential underlying conditions, then talk to a healthcare professional to determine the best course of action.

(References)

Bertoli MJ, Sadoughifar R, Schwartz RA, Lotti TM, & Janniger CK. (2020). Female pattern hair loss: A comprehensive review. Dermatologic therapy, 32700775.
Bhat YJ, Saqib NU, Latif I, & Hassan I. (2020). Female Pattern Hair Loss-An Update. Indian dermatology online journal, 32832434.
Phillips TG, Slomiany WP, & Allison R. (2017). Hair Loss: Common Causes and Treatment. American family physician, 28925637.

Tell your friends about us.

We would love to help them too.

For First Time Users

What is Ubie’s Doctor’s Note?

We provide a database of explanations from real doctors on a range of medical topics. Get started by exploring our library of questions and topics you want to learn more about.

Was this page helpful?

Purpose and positioning of servicesUbie Doctor's Note is a service for informational purposes. The provision of information by physicians, medical professionals, etc. is not a medical treatment. If medical treatment is required, please consult your doctor or medical institution. We strive to provide reliable and accurate information, but we do not guarantee the completeness of the content. If you find any errors in the information, please contact us.