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It's completely understandable to be concerned about hair thinning, especially when your hair is already on the finer side. The good news is that not everyone on methotrexate experiences significant hair loss — studies suggest between 1% and 9% of people are affected, so it's not a guaranteed side effect for everyone.

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It's completely understandable to be concerned about hair thinning, especially when your hair is already on the finer side. The good news is that not everyone on methotrexate experiences significant hair loss — studies suggest between 1% and 9% of people are affected, so it's not a guaranteed side effect for everyone.

Methotrexate works by blocking folate, a B vitamin that helps cells grow. Since hair follicle cells grow quickly, they can sometimes be affected alongside the inflammation-causing cells the medication is targeting. As for whether it will continue — that varies from person to person. Some people notice mild shedding early on that stabilizes over time, while others may see ongoing thinning. Hair loss with methotrexate is often mild and can improve if the medication is stopped or the dose is adjusted.

Regarding the supplements already being taken, it's worth checking with a doctor that they're the right type and dose. Folic acid specifically is commonly recommended alongside methotrexate to help reduce side effects like hair loss and nausea — though it doesn't work for everyone. Here are some practical steps worth discussing with a rheumatologist:

- Ask about folic acid — if not already taking it, this is often prescribed alongside methotrexate
- Mention the current supplements — to make sure they don't interfere with treatment
- Monitor the hair loss — if clumps start falling out suddenly or in patches, contact a healthcare provider right away
- Consider a dosage review — if thinning worsens, a doctor may adjust the methotrexate dose or explore alternative medications

Catching concerns early and keeping an open conversation with a rheumatologist is the best way to stay ahead of this.

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

Does Methotrexate Cause Hair Loss? Your Complete Guide