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Dietitian-Approved Tips for Healthy Eating on Weight Loss Injections

AuthorPhlo | Morrisons

Published on 30th Sep, 2025

Are you using Mounjaro for weight loss and wondering how to optimise your diet? Or perhaps you're thinking about starting Mounjaro and want to understand how it fits into your eating habits? At Morrisons Clinic, we’re here to support you with food choices that suit your goals, highlight options to be mindful of, and share tips for a sustainable weight –loss journey.

Why Diet Matters with Mounjaro

Mounjaro works by reducing appetite, curbing cravings, and regulating blood glucose levels. While it helps with weight loss, a healthy balanced diet plays a crucial role. Eating well, staying active, getting quality sleep, and managing stress all contribute to long-term health and sustainable weight loss.

Mounjaro Diet Plan

To lose weight effectively, maintaining a consistent calorie deficit is key. The best diet is one you can stick with long-term. Focus on well-balanced meals that include plenty of protein and fibre. Aim to eat three meals a day, with snacks as needed, and stay well hydrated throughout the day.  

For a balanced meal, aim to fill:

  • A quarter with lean protein.

  • Half your plate with vegetables, salad, or fruit.

  • A quarter with whole grain carbohydrates.

  • A small portion of healthy fats.

Protein: Key for Muscle Maintenance

Whilst losing weight, protein helps maintain muscle mass and keeps you feeling fuller for longer. Explore our High-protein Recipe Collection for some tasty protein-packed dishes.

Lean sources of protein include:

  • Low-fat dairy (milk, yoghurt and cheese) or unsweetened soya alternatives. Aim to fill a quarter of your plate with these protein-rich options.

  • Lean meat (like chicken or turkey).

  • Fish.

  • Eggs.

  • Lentils.

  • Beans.

  • Tofu.

Carbohydrates: Fibre-Rich Options

To reduce the risk of constipation which is a common side effect of Mounjaro, include high-fibre carbs like:

  • Whole grain bread.

  • Brown rice.

  • Oats.

  • Whole grain pasta.

  • Potatoes.

  • Quinoa.

These provide lasting energy and support digestion.

Healthy Fats: Boost Your Health

Unsaturated fats support heart health and aid vitamin absorption. To include a small portion at each main meal, consider these options:

  • Nuts and unsweetened nut butters.

  • Seeds.

  • Olives.

  • Oily fish (salmon, sardines, avocado and olive oil).

Nutrient Powerhouses & Foods to Limit

Fruits and vegetables are low in calories and packed with vitamins and minerals. Try to include a variety in your diet. Browse our Market Street Fruit & Veg Recipe Collection for some delicious ways to get those veggies in.

To support weight loss, be mindful of:

  • Ultra processed foods (ready meals, fried foods, sugary drinks).

  • Added sugars (in sweets, cakes, and sugary drinks).

  • Refined carbohydrates (like white bread and pasta).

Extra Tips

  • Stay hydrated: Aim for 2-3 litres of fluids daily.

  • Prioritise fibre: It helps prevent constipation.

  • Avoid extreme diets: Focus on balanced meals rather than restrictive diets.

By following these guidelines, you can enhance your weight loss with Mounjaro while maintaining a healthy, enjoyable diet. If you need more help, our team at Morrisons Clinic is here for you every step of the way!

Get Started with Morrisons Clinic