Hair loss is a common side effect of rapid weight loss and can occur in up to 1 in 10 people taking Mounjaro or Wegovy. While it can be concerning, this type of hair loss is generally temporary and linked to the body's reaction to weight changes rather than the medication itself.
Use this guide to understand:
Why Mounjaro or Wegovy may lead to temporary hair thinning.
What "telogen effluvium" is and how it relates to weight loss.
Practical steps to support hair health and regrowth.
Understanding hair loss and weight loss
Losing 50 to 100 hairs a day is normal and often goes unnoticed. However, some patients notice increased thinning while using Mounjaro or Wegovy.
Telogen Effluvium: This is the medical term for temporary hair loss triggered by a significant change to the body, such as rapid weight loss.
Duration: Once your weight stabilises, this side effect usually subsides. In most cases, your hair should regrow to its original thickness over time.
Frequency: This is a known common side effect for those achieving significant weight reduction on Mounjaro or Wegovy.
How to support hair health
To minimise hair thinning and support healthy regrowth while on your weight loss journey, MedExpress recommends the following:
Aim for steady weight loss: Try to lose weight gradually (approximately 0.5kg to 1kg per week). Losing weight too quickly can put excessive stress on your body and trigger hair shedding.
Optimise your nutrition: Ensure your diet includes sufficient amounts of:
Protein: The building block of hair.
Iron and Zinc: Minerals essential for follicle health.
B Vitamins (such as Biotin): Important for the hair growth cycle.
Manage stress levels: High physical or emotional stress can disrupt hair follicle function. Practice relaxation techniques such as meditation, breathing exercises, or gentle physical activity.
Need further support?
If you still need help after reviewing the information above, additional assistance is available.