How many calories should you eat on Wegovy each day?

Should you count calories at all, or just eat to hunger?

This is the question most people on Wegovy quietly wrestle with. The honest answer is that it depends on how suppressed your appetite becomes. For some, the medicine does the heavy lifting and natural hunger cues become a reasonable guide. For others, appetite drops so dramatically that they find themselves eating very little without intending to (sometimes fewer than 800 calories a day) which can trigger muscle loss and nutritional gaps that undermine the whole point of treatment.

A loose tracking approach, rather than obsessive logging, tends to be what dietitians recommend alongside GLP-1 medicines. You are not aiming to starve; you are aiming for a sustainable deficit. Eating as few as 800 calories a day on semaglutide is something worth understanding in more depth before assuming less is more. It rarely is. A structured 500–600 kcal daily deficit from your personal maintenance level is a sensible starting point, and it translates to roughly 0.5–1 kg of weight loss per week when combined with Wegovy's appetite effects.

The one misconception worth letting go of gently: more restriction does not mean faster lasting results. Extreme cuts accelerate muscle loss and often lead to rebound hunger when doses are paused or tapered. Slow and steady, even on a drug that makes slow feel faster, is still the right frame.

How do you find your actual daily calorie target?

Your maintenance calories, the amount your body needs to hold its current weight, sit at the centre of any sensible calculation. To estimate it, you need your basal metabolic rate (the energy you burn at rest) adjusted for how active you are across the day. The NHS does not publish a personalised calculator for this, but the NHS Live Well healthy weight guidance offers a clear starting framework alongside practical dietary advice.

From that maintenance figure, a 500–600 kcal daily deficit is a widely used and clinically sensible reduction. On Wegovy, you may find your appetite naturally lands you in or near that range without conscious effort, particularly after dose increases. The challenge is ensuring that the calories you do eat are doing real work: enough protein (most adults aiming for weight loss need at least 1.2 g per kg of body weight), adequate fibre, and enough fluid to support how the medicine affects digestion.

If you want a closer look at how to work out the right number of calories per day on Wegovy, that page walks through the calculation in more detail. The short version: personalise it, then revisit it every few months as your weight changes, because your maintenance calories fall as you lose weight.

Calorie quality on Wegovy matters as much as the number

When appetite falls sharply, every meal has to carry more nutritional weight. A 1,500-calorie day built around processed food leaves you short on protein, fibre, vitamins and minerals. The same 1,500 calories structured around lean protein, vegetables, legumes and wholegrains keeps muscle on, keeps digestion moving and supports the energy levels you need to stay active.

The practical decisions are: what foods to prioritise on Wegovy, and how to handle the nausea and fullness that come with early doses. Eating smaller portions more frequently can help; so can avoiding high-fat and heavily processed meals, which slow gastric emptying further on top of what semaglutide already does. If you find nausea is the real barrier to eating enough, the timing of meals matters too, how often to eat on Wegovy is worth reading alongside this.

On the cost side, Wegovy is a private prescription at present for most people in England; if you are weighing up the full picture, what Wegovy costs in the UK covers what a typical month looks like. Nutrition support is part of what a good clinical service builds into treatment, not an afterthought.

When your hunger feels wrong, night-time and off-dose patterns

One pattern prescribers at clinician-led services hear regularly: appetite suppression is strongest in the days after the weekly injection and sometimes eases noticeably toward the end of the week. For some people that late-week window brings back hunger, feeling hungry at night on semaglutide is more common than people expect and does not mean the medicine has stopped working.

Understanding this rhythm helps you plan. If your appetite returns toward the end of week one, that is not a reason to eat erratically; it is useful information about when to have a structured meal ready. The NHS England guidance on weight-management injections makes clear that lifestyle support, including dietary input, is an expected part of treatment alongside the medicine itself.

For a broader view of what to eat on Wegovy day to day, including meal ideas and how to structure protein across the day, that page pulls together the practical detail. And if you are still deciding whether Wegovy is the right option for you, the full Wegovy overview explains the licence, the clinical evidence and how private treatment works in the UK.

If you are ready to talk through your specific situation with a prescriber, starting a free consultation is the first step, dietary guidance is built into the clinical review, not bolted on separately.