Understanding Hair Loss on Mounjaro: What’s Happening and How to Manage It
At Defyne Aesthetics, we’re proud to support our patients on their wellness and weight loss journeys with innovative treatments like Mounjaro (tirzepatide). While many experience impressive results in appetite control and body weight reduction, a common question we’ve heard recently is:
“Why am I losing hair on Mounjaro?”
If you’ve noticed increased hair shedding since starting the medication, you’re not alone—and we’re here to help you understand why it’s happening, what to expect, and how to support healthy hair regrowth.
Why Hair Loss Can Occur on Mounjaro
The hair loss some patients experience on Mounjaro isn’t typically a direct side effect of the medication itself. Instead, it’s often related to the rapid weight loss Mounjaro helps achieve. When the body undergoes sudden changes—like a significant drop in weight or reduced calorie intake—it can temporarily divert energy and nutrients away from non-essential functions, such as hair growth.
This can trigger a condition called telogen effluvium, where more hair than usual enters the resting (shedding) phase of the hair cycle. It typically begins 2–3 months after the initial weight loss starts and can last a few months before resolving.
Additional Contributing Factors:
- Reduced nutrient intake: Especially protein, iron, zinc, and B vitamins
- Low calorie diets: Can lead to micronutrient deficiencies even if weight loss is healthy
- Stress (physical or emotional): Often accompanies rapid lifestyle changes
The Good News: It’s Usually Temporary
In most cases, this type of hair loss is not permanent. As your weight stabilizes and your body adjusts, hair typically begins to regrow. At Defyne, we want to empower you to take steps to minimise the impact and support healthy regrowth.
How to Support Your Hair During Weight Loss
Here are a few evidence-based strategies we recommend:
✅ Prioritise Protein: Aim for at least 60–100g per day, depending on your body size and activity level.
✅ Supplement Smartly: A daily multivitamin with iron, zinc, biotin, vitamin D, and B12 can help fill nutritional gaps.
✅ Be Gentle: Avoid over-brushing, tight hairstyles, and excessive heat or chemical styling during shedding periods.
✅ Stay Hydrated & Manage Stress: Both hydration and mental wellbeing play important roles in hair health.
✅ Supplement Smartly: A daily multivitamin with iron, zinc, biotin, vitamin D, and B12 can help fill nutritional gaps.
✅ Be Gentle: Avoid over-brushing, tight hairstyles, and excessive heat or chemical styling during shedding periods.
✅ Stay Hydrated & Manage Stress: Both hydration and mental wellbeing play important roles in hair health.
When to Seek Advice
If hair loss is ongoing, patchy, or accompanied by other symptoms (like fatigue or brittle nails), we may recommend a review and possibly blood tests to rule out:
- Iron deficiency
- Thyroid dysfunction
- Vitamin D or B12 deficiency
- Hormonal imbalances
At Defyne Aesthetics, we can also advise on in-clinic treatments that support hair regrowth and overall scalp health if needed.
Final Thoughts
If you’re losing hair while on Mounjaro, know that you’re not alone—and more importantly, it’s usually a temporary and manageable part of your journey. With the right nutrition and support, your hair can and will recover.
If you have concerns, don’t hesitate to reach out to our team. We’re here to guide you through every step—from confidence in your weight loss to confidence in your appearance.
Need advice or a check-in?
Book a consultation with our team at Defyne Aesthetics today.
Book a consultation with our team at Defyne Aesthetics today.