What Is the Ideal Calorie Intake on Mounjaro or Wegovy?

Calorie needs are individual, and several factors influence what a sensible daily target looks like for you specifically.

Body size and composition

Larger bodies and those with more muscle mass burn more energy at rest, so a higher baseline calorie intake is typically needed to avoid losing lean tissue alongside fat. This is one reason blanket targets can be misleading: a useful number for one person may be too low or too high for another.

Sex and hormonal differences

On average, adult men tend to have higher calorie requirements than adult women, largely because of differences in body composition and hormonal profiles. General population guidance — for example, from the UK's NHS — suggests around 2,500 kcal per day as a rough maintenance figure for men and around 2,000 kcal for women, though these are population-level averages, not personal prescriptions. For those actively working toward a healthy weight, a modest reduction from individual maintenance is typically the goal. You can explore how these figures break down further in our guides to calorie intake for men and daily calorie needs for women.

Activity level

Someone who is highly active needs meaningfully more fuel than someone who is largely sedentary, even at the same body weight. Adjusting for activity is an important part of setting a realistic target.

GLP-1 appetite changes

Mounjaro (tirzepatide) and Wegovy (semaglutide) commonly reduce appetite and what many people describe as "food noise" — the constant background pull toward eating. This can make it easier to eat within a calorie deficit, but it also raises the risk of eating far too little, particularly of protein. Prioritising protein (many practitioners suggest 1.2–1.6 g per kg of body weight as a general educational range) within your calorie budget helps preserve muscle during weight loss.

For a deeper look at how a calorie deficit fits into this, see our guide on understanding a calorie deficit on GLP-1 medicines, and for reference ranges and how they are typically calculated, our recommended calorie consumption overview is a helpful starting point.

Knowing your approximate target is one thing — consistently hitting it when appetite is unpredictable is another. This is where GLP Trackr's AI food logging makes a real difference.

Rather than manually searching every ingredient, you can simply point your phone camera at a meal and let the app estimate calories, protein, and macros from the photo. A barcode scanner and a searchable food database cover packaged and home-cooked meals too. Over time, the app builds a picture of whether you are regularly hitting your calorie and protein targets — or falling short without realising it.

You can set a daily calorie target and a protein goal directly in the app, and the morning check-in captures weight, energy, and other wellbeing markers alongside your nutrition data. The insights feature then helps you see how your intake on different days relates to your wider progress — useful information to bring to your next prescriber appointment.

A note on targets: the figures you track should reflect what your prescriber or doctor has discussed with you. GLP Trackr helps you record and review your intake — it is not a substitute for personalised clinical guidance, and any significant change to your eating plan is worth discussing with your healthcare professional first.

Start logging your meals and see your patterns clearly — GLP Trackr is available free on the App Store and Google Play, with a 7-day free trial to explore everything the app offers.