One of the most common (and sometimes distressing) side effects after gastric sleeve and other bariatric surgeries is hair loss. If you’re noticing more strands in the shower or on your brush a few months after surgery, you’re not alone. The good news? It’s usually temporary, and nutrition plays a key role in both prevention and recovery.
Why Does Hair Loss Happen After Surgery?
Hair loss typically begins around 3–6 months post-op and is usually a condition called telogen effluvium. This occurs when your body goes through stress — such as rapid weight loss after lap band surgery or major surgery of any kind. A lot of women also experience the same phenomenon after or during pregnancy. Essentially, these stresses on the body shift resources away from non-essential functions like hair growth.
Several factors post weight loss surgery can contribute:
- Reduced calorie intake
- Lower protein consumption
- Vitamin and mineral deficiencies (especially zinc, iron, biotin, and B12)
- Hormonal changes or existing thyroid conditions
How Nutrition Supports Hair Regrowth
While you can’t stop hair loss entirely post-op, you can minimise it and support healthy regrowth with the right nutrition and supplement strategy:
Prioritise Protein
Hair is made of keratin, a protein. Without enough, your body can’t maintain healthy hair follicles.
Aim for: 60–80g protein per day (or as advised by your dietitian)
Best sources:
- Lean meats, fish, eggs
- Protein shakes
- Greek yoghurt and cottage cheese
- Legumes and tofu
Stay on Top of Supplements
After surgery, your ability to absorb certain nutrients is reduced.
Key supplements include:
- Multivitamin (formulated for bariatric patients – such as BN Healthy)
- Iron (especially for menstruating women)
- Vitamin B12
- Zinc and Biotin (these are contained within your bariatric specific multivitamin and would avoid taking these as additional supplements)
Choose Nutrient-Rich Foods
Whole foods rich in antioxidants, healthy fats, and vitamins help nourish the scalp and follicles.
Top foods for hair health:
- Eggs (biotin)
- Oily fish (omega-3s) – or commencing an omega 3 supplement
- Spinach and lentils (iron)
- Nuts and seeds (zinc and vitamin E)
The Bottom Line
Hair loss after bariatric surgery can be unsettling, but it’s usually not permanent. At Complete Weight Loss Solutions With consistent protein intake, targeted supplements, and nutrient-dense meals, your hair can recover.. If hair loss persists beyond 6–9 months, check in with your team to rule out other causes.