If constipation is the GLP-1 problem grinding you down, this is the breakfast I would point you to first. Banana cinnamon chia porridge brings a huge 15g of fibre in one bowl, warmed through and naturally sweetened with banana and cinnamon. At 430 calories it is a proper, filling breakfast that does your digestion a real favour.
A quick word first: I am not a doctor or a dietitian, just someone who lived this. None of these foods or supplements are medication, and if you are on a GLP-1, check anything new with your GP or pharmacist. Right, let us get to it.
For the digestion angle, see fibre on GLP-1 and constipation on GLP-1.
Why this is a digestion hero
Fibre is the quiet casualty of eating less, and this bowl brings it back in force.
15g of fibre in one meal. Between oats, chia and flax, this is one of the highest-fibre breakfasts you can make, which is exactly what a backed-up gut needs.
Cinnamon and banana, no added sugar needed. The banana sweetens it naturally and the cinnamon adds warmth, so you keep added sugar to almost nothing.
Chia and flax bring more than fibre. They add plant omega-3 and help the porridge thicken to a lovely, satisfying texture.
The breakfast I recommend most for constipation
If someone messages me struggling with GLP-1 constipation — and plenty do — this is usually the first food I point them to. Fifteen grams of fibre in one bowl is a serious contribution when your intake has cratered from eating less. Combined with drinking properly and a bit of movement, getting this in most mornings sorted out a problem for me that over-the-counter remedies only papered over.
The key caveat, and I cannot say it loudly enough, is water. Fibre without enough fluid does the exact opposite of what you want and can make you more blocked up, not less. So if you are leaning on this bowl for its fibre, keep a big glass of water alongside it and keep drinking through the morning.
The macros that matter
Here is what one serving gives you:
| Per serving | Amount |
|---|---|
| Calories | ~430 kcal |
| Protein | 13g |
| Carbohydrate | 50g |
| Fat | 18g |
| Fibre | 15g |
Those are the numbers I care about most, and the protein figure is the one to watch on a GLP-1. As a rough guide I aim for somewhere around 1.2 to 1.6g of protein per kilo of body weight across the day to protect muscle while losing fat, and I judge every meal by how much of that it contributes. I log meals like this in Cronometer (it is free) so I know I am actually hitting my targets rather than hoping — and honestly, the first time I tracked properly I realised I was eating far less protein than I thought. If you have never done it, give it two weeks; it is the single most useful thing you can do, and it costs nothing.
What you need (serves 1)
- 1 ripe banana
- 40g porridge oats
- 1 tbsp chia seeds
- 1½ tbsp ground flaxseeds
- Pinch of ground cinnamon
- 200ml milk or milk alternative
- 1 tsp honey or agave
- Extra cinnamon to serve
How to make it
- Mash the banana in a bowl, smooth or slightly chunky as you prefer.
- Stir in the oats, chia, flaxseeds and cinnamon.
- Pour over the milk and mix well.
- Warm gently in a saucepan over a low heat for a few minutes until thick and heated through.
- Drizzle with honey and add a little extra cinnamon before serving.
Boosting protein and easing in fibre
This is fibre-rich rather than protein-rich, so:
Add protein. Stir in a scoop of Super Protein with Fibre or top with Greek yoghurt to balance it out.
Build fibre up gradually. If your fibre intake has been low, ramp up slowly and drink plenty of water, or a big fibre jump can backfire.
Make it overnight. Combine cold and refrigerate for effortless overnight oats.
How to build up fibre without the bloat
Fifteen grams of fibre is fantastic if your gut is used to it, and a shock if it is not. If your fibre intake has been low — which it often is on a GLP-1 — jumping straight to a bowl like this can leave you gassy and bloated for a few days. The sensible approach is to build up gradually: start with half the chia and flax, drink plenty of water, and increase over a week or two as your system adjusts. Do it slowly and your gut adapts happily. Do it overnight and you will have a uncomfortable couple of days.
Overnight oats or hob
Made cold and left overnight, this becomes thick, spoonable overnight oats — ideal for prepping two or three jars at once. Or cook it warm in five minutes. Either way it holds in the fridge for a few days. See meal prep ideas for Mounjaro.
How it fits a full day of eating
This is a big, fibre-rich breakfast, so I treat it as a substantial morning meal and keep an eye on carbs across the rest of the day to balance it. It genuinely fuels a busy morning, after which a protein-focused high-protein lunch tops up the protein this bowl is lighter on.
Dinner is protein and veg from my high-protein dinner rotation, and if I have trained, a protein shake helps recovery. The fibre here is the headline benefit, so I make sure the rest of the day includes plenty of water and doesn’t pile even more fibre on too quickly. Balance across the day is everything on a GLP-1 — my complete GLP-1 guide shows how I structure it.
No appetite this morning?
Warm and soft, porridge is usually kinder than cold food when your appetite is low; even a smaller portion still delivers fibre. When cooking is out entirely, HelloFresh keeps proper meals arriving so you are not left short.
Supplements that pair well
Because this is all about digestion, it pairs naturally with a probiotic like Pre + Pro 15, and with plenty of water. If constipation is really dogging you, my constipation on GLP-1 guide goes into detail, and the free Lily & Loaf lifestyle analysis can match a routine to you.
Frequently asked questions
Will this help with GLP-1 constipation?
It brings 15g of fibre, which genuinely helps — but you must drink enough water alongside it, or fibre can make things worse rather than better.
Is 430 calories too many for breakfast?
Not for a filling main breakfast with this much fibre. Scale the oats or banana down if you want it lighter on a quiet-appetite day.
Can I eat it cold?
Yes. Made overnight it becomes lovely thick overnight oats, no cooking needed.
How much water should I drink with a high-fibre breakfast?
Have a large glass with the meal and keep sipping through the morning. Fibre needs fluid to work; without it, it can worsen constipation rather than ease it.
Can I make this the night before?
Yes — combine everything cold and refrigerate for thick overnight oats. It is arguably easier than cooking and just as effective for fibre.
Does cinnamon really do anything?
It adds warmth and natural sweetness so you need less honey, and many people enjoy it with breakfast. Treat the flavour as the main benefit rather than any dramatic health claim.
The bottom line
Banana cinnamon chia porridge is the breakfast I point people to first when GLP-1 constipation is making life miserable — 15g of fibre in one warm, naturally sweet bowl. Just remember the golden rule: plenty of water alongside it, and build your fibre up gradually. Add a scoop of protein to balance it and it is a genuinely restorative start to the day. To find the rest of a gut-friendly routine that suits you, the free Lily & Loaf lifestyle analysis is the easiest way in.
The tools I lean on
If you are putting a GLP-1 routine together, this is the order I would do it in, free tools first:
- Track a fortnight of food in Cronometer so you can see your real protein and calories.
- Take the free Lily & Loaf lifestyle analysis to find the supplements actually worth buying.
- Start an Audible trial for something to listen to while you cook or walk.
- Keep HelloFresh on standby for the weeks cooking from scratch just is not happening.
A bit about me
I am Alan Spicer. I lost around seven stone on Mounjaro and filmed the whole thing, warts and all, on my YouTube channel. Protein-first, no-nonsense breakfasts like this were a real part of how I held onto muscle and kept the weight off.
This article shares my personal experience and general information only. It is not medical advice. Food and supplements support a balanced diet and healthy lifestyle and do not replace it or any treatment prescribed by your doctor. Speak to your GP or pharmacist before making changes, especially while on a GLP-1 medication.
Recipe adapted from the original Banana Cinnamon Chia Porridge at Lily & Loaf.
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