How to Protect Your Muscle on GLP-1 Medication

The number on the scales is only half the story. When weight comes off quickly, as it often does on GLP-1 medication, some of it can be muscle rather than fat. Research on these medicines has shown that lean tissue can make up a meaningful share of the weight lost.

Why does that matter? Muscle keeps you strong, supports your joints and balance, helps control blood sugar and keeps your metabolism working for you. Losing it can leave you feeling weaker and make it easier for the weight to return later. The good news: you can do a lot to protect it.

Protein at every meal

Muscle is built and repaired from protein, and a reduced appetite makes it easy to fall short. Rather than counting every gram, aim for a palm-sized portion of protein at each meal, and a protein-rich snack if you are struggling to eat full meals.

• Animal sources: eggs, chicken, turkey, fish, lean red meat, Greek yoghurt, skyr, cottage cheese, milk
• Plant sources: tofu, tempeh, beans, lentils, chickpeas, edamame, soya milk

Spreading protein across the day works better than one big portion at dinner. If you would like a simple target, read how much protein you need on GLP-1.

Lift something, twice a week

The UK physical activity guidelines recommend muscle-strengthening activity on at least two days a week, and on GLP-1 medication this matters even more. You do not need a gym:

• Squats to a chair, wall press-ups, lunges and glute bridges at home
• Resistance bands, which are cheap and easy to store
• Pilates or a strength class
• Carrying shopping, gardening and climbing stairs all count too

Start gently and build up. If you have a health condition, check with your GP first.

Do not cut too hard

When appetite drops dramatically, some people end up eating very little. That can speed up muscle loss and leave you exhausted. Eating regularly, even small amounts, gives your body what it needs to hold on to muscle while it lets go of fat.

Sleep and recovery

Muscle repairs while you rest. Seven to nine hours of sleep, regular meal times and staying hydrated all support recovery and help you keep up with exercise.

Watch more than the scales

Track how your clothes fit, how strong you feel on the stairs and whether everyday tasks feel easier. These are often better signs of progress than weight alone.

Emily specialises in nutrition alongside GLP-1 medication. Find out more about GLP-1 support.

This article is general nutrition information, not medical advice. If you are taking GLP-1 medication, follow your prescriber’s guidance and speak to them before changing your diet, especially if you have diabetes or another medical condition. Read our health disclaimer.