If you have recently started taking a GLP-1 medication such as Ozempic, Wegovy, or Mounjaro, you may have noticed a smaller appetite and a change on the scales. Research suggests that some of the weight lost on these medications can come from lean muscle as well as fat. In my online practice, clients often tell me they feel physically weaker, or that they have noticed a loss of muscle tone, and want to know what they can do through food.
When your appetite drops, you naturally eat less, and that can include less protein. Without enough nourishment and some physical activity that challenges your muscles, the body may lose muscle alongside fat. Muscle matters for strength, balance, bone health and everyday energy, so it is worth looking after, whatever the number on the scales is doing.
Why Lean Mass Matters on GLP-1 Medication
Muscle is far more than appearance; it supports movement, posture and independence as we age. Losing muscle alongside fat can leave you feeling less resilient, which is why many people want to eat in a way that supports it. I work alongside your doctor on anything to do with the medication itself, including dose, timing and any changes, as those decisions sit with your prescriber; my role is the food side of the picture.
Prioritising Protein at Every Meal
Protein provides the amino acids your body uses to maintain and repair muscle. Because GLP-1 medications slow gastric emptying and bring on early fullness, eating enough protein can feel hard when you are full after just a few bites. A practical approach is to start each meal with the protein food on your plate, so that the first mouthfuls count.
Here are strategies I share with clients as a GLP-1 nutritionist:
- Spread protein across the day: Include a protein food at breakfast, lunch and dinner, plus a small protein-containing snack if you are hungry, rather than leaving it all until the evening.
- Choose compact protein foods: Eggs, Greek yoghurt, tofu, fish, chicken, cottage cheese and lentils deliver plenty of nourishment in a small portion when appetite is low.
- Use softer or liquid options when solid food feels heavy: A yoghurt-based smoothie, a bowl of dal or a milky drink can be easier to manage on days when appetite is especially small.
- Add some resistance activity: Strength-based movement such as resistance bands, light weights or bodyweight exercises gives your muscles a reason to stay. Build up gradually and at a pace that feels comfortable for you.
- Keep drinking regularly: Sipping fluids through the day supports digestion and general well-being, particularly when you are eating less.
Bringing Movement and Meals Together
Food on its own cannot fully protect muscle without the signal that exercise provides. Lifting weights, using resistance bands, or doing bodyweight exercises like squats and wall push-ups encourages your body to hold on to muscle fibres even when you are eating less. Having a protein-containing meal or snack around the time you exercise is a simple way to give your muscles the materials they use for repair.
To understand how different foods contribute, you can explore my guides on best protein sources for all diets and debunking common protein myths. My comprehensive article on GLP-1 medications and nutrition will give you a well-rounded foundation for eating well on Ozempic or Mounjaro.
Looking After Strength for the Long Term
Looking after your muscle is one of the most useful things you can do for how you feel day to day. Keeping up protein-containing meals, staying active and eating regularly may help you keep your strength as you go. If you are also thinking about your weight more broadly, you may find my page on weight loss helpful.
General tips can stop working the moment early fullness makes finishing a small meal feel impossible, or when you notice the stairs getting harder. If that sounds familiar, one-to-one support can help you build a way of eating around your appetite, your food preferences and your daily routine. Through my nutrition services, we can look at your meals together and find protein-rich foods you can realistically enjoy. You are welcome to reach out via my contact page or book an online consultation to get started.
