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Published on: 8/20/2026

What could be the reasons for my hair loss?

Hair loss is a common condition that can affect anyone, and it often has more than one cause. The most frequent triggers include genetics (such as male or female pattern baldness), chronic stress, hormonal changes (like pregnancy, menopause, or thyroid issues), and side effects from certain medications. Nutritional deficiencies and underlying medical conditions can also play a role.

Because the causes vary so widely, pinpointing the reason behind your hair loss is the first step toward effective treatment. Rather than guessing, take a free, instant, online symptom check to get personalized insights based on your specific situation—and clearer guidance on what to do next.

Reviewed for medical accuracy: 07/15/2026

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Explanation

Hair loss, also known as alopecia, can be caused by various factors. Genetic factors are a common cause, where hair loss patterns run in families. This type is often called androgenetic alopecia. Stress and hormonal changes, such as those occurring during pregnancy or menopause, can also lead to hair loss. Additionally, certain medications may cause hair to fall out. For example, some drugs used for treating cancer, depression, or heart problems can impact hair growth.

Here are some common reasons for hair loss:

  1. Genetic Factors: Family history can influence hair loss patterns.
  2. Hormonal Changes: Events like pregnancy, childbirth, or menopause can affect hair.
  3. Medical Conditions: Illnesses such as thyroid problems or autoimmune diseases can cause hair loss.
  4. Medications: Some drugs, like those for cancer treatment, may lead to hair loss.
  5. Stress and Lifestyle: High stress levels and poor nutrition may contribute to hair loss.

Understanding the cause of hair loss can help in finding the right treatment or management strategy. To get personalized insights about your symptoms and potential underlying causes, try our free AI symptom checker today.

(References)

  • Phillips TG, Slomiany WP, & Allison R. (2017). Hair Loss: Common Causes and Treatment. American family physician, 28925637.

  • Trüeb RM. (2002). [Diffuse hair loss in women]. Therapeutische Umschau. Revue therapeutique, 12090117.

  • Tosi A, Misciali C, Piraccini BM, Peluso AM, & Bardazzi F. (1994). Drug-induced hair loss and hair growth. Incidence, .... Drug safety, 8018303.

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