What Fish to Eat on Mounjaro

At Hamiltons Fish we buy fresh fish from Brixham Fish Market most days of the week, and one of the questions we are asked more and more is what to eat on Mounjaro. The medication reduces appetite, so meals tend to be smaller and what goes on the plate matters more. Fish is one of the more useful things to reach for: lean, high in protein for its weight, gentle on the stomach and quick to cook in modest portions. This guide looks at which fish to choose and how to cook them. For the wider picture, see our guide to white fish on GLP-1 medication.

This is a guide to choosing and cooking fish, not medical advice. If you are taking Mounjaro or another GLP-1 medication, your prescriber or a registered dietitian is the right person to advise on your overall diet.

Why fish suits eating on Mounjaro

Protein is the part of a meal that tends to keep you feeling satisfied for longest, and fish is one of the leanest ways to include it. White fish in particular delivers a good amount of protein with very little fat, so a small portion feels substantial without sitting heavily. The flavour is mild rather than strong, which many people find welcome when appetite is low or richer, stronger-smelling foods feel less appealing. Oily fish brings something different, the omega-3 oils that make it worth eating regularly. Between the two, fish covers a lot of ground for very little effort.

Which fish to choose

A simple way to think about it is lean white fish for everyday meals, oily fish for variety, and shellfish for a light source of protein.

• White fish. Cod, haddock, pollack and hake are very lean, mild and easy to digest. They are the everyday choice.
• Oily fish. Salmon, mackerel, trout and sardines are richer and provide omega-3. Our Omega-3 Seafood range brings these together.
• Shellfish. Prawns and mussels are a light, lean source of protein and quick to cook.

Keeping a few individual portions to hand makes the choice easy on the day. A White Fish Box covers the lean everyday options, and a Mixed Fish Box or Fish of the Day Box gives you a little of each.

How to cook fish on Mounjaro

Gentle methods suit fish and keep it light. Baking, steaming and poaching need little or no added fat and keep the flesh tender. A short grill or a quick pan-fry works well too, and adds a bit of texture. The main thing is not to overcook it, as fish is done as soon as the flesh turns opaque and flakes easily. Small portions cook in minutes, which helps on days when preparing a full meal feels like too much. A squeeze of lemon, some herbs and a little seasoning is usually all that is needed.

What to leave off the plate

Nothing is off limits, but some things tend to sit more comfortably than others when digestion is slower. Deep-fried fish in a heavy batter, and rich, creamy sauces, can feel heavy in a way that lighter cooking does not. That does not mean giving up the flavours you enjoy, only that baking, steaming, poaching or grilling tend to suit better day to day. If you do fancy fish and chips, a smaller portion and a lighter hand will go a long way.

Portion sizes

When appetite is reduced, a smaller portion is often all you want, and there is little sense in cooking more than you will eat. A single fillet of around 140 grams is a normal serving and a useful source of protein for most people. Our fish is prepared in portions rather than as large whole pieces, so you can cook one or two at a time and keep the rest for another day. If you are unsure how much protein to aim for, your prescriber or dietitian can advise on the right amount for you.

Frequently asked questions

Is fish good to eat on Mounjaro?

Fish is well suited to eating on Mounjaro. It is lean, mild and high in protein for its weight, so a small portion is satisfying without feeling heavy, and it is gentle on the stomach. Oily fish such as salmon and mackerel are worth including too, for their omega-3.

What fish can I eat on Mounjaro?

Lean white fish such as cod, haddock, pollack and hake are the easy everyday choice. Oily fish such as salmon, mackerel and sardines add variety and omega-3, and shellfish such as prawns and mussels are a light source of protein. All of them are straightforward to cook gently.

What fish should I avoid on Mounjaro?

No fish needs to be avoided as such. It is more about how it is cooked. Deep-fried fish in a heavy batter, and rich creamy sauces, can feel heavy when digestion is slower, so lighter cooking tends to suit better.

Can I eat fish and chips on Mounjaro?

There is no rule against it, but a full portion of battered, deep-fried fish can sit heavily. A smaller portion, or a piece of grilled or baked fish with the chips, is often more comfortable.

How should I cook fish on Mounjaro?

Gentle methods work best: baking, steaming, poaching and grilling all keep fish light and need little or no added fat. A quick pan-fry is fine too. Keep portions modest and avoid overcooking.

Browse the full range of fresh fish below, all prepared to order and never previously frozen. Start with white fish, or keep a few portions to hand with a White Fish Box.