Green means gentle, not 'go for it'

Here's a fun discovery people make on their first browse: jelly is green. Plain chips are green. White rice, sugar, plain crackers — green, green, green. Which leads to a very reasonable thought: brilliant, I'll just live on those, then.

I love this question, because the answer says everything about what our scores are — and aren't.

Green means "gentle on your gut", not "good for you"

The GASP score answers one question: how likely is this food to upset a sensitive gut? Gas, urgency, loose output, coarse residue. That's it. It's a symptom map, not a health star.

So why is jelly green? Because sugar and refined starch are low-FODMAP and leave almost no residue — they're genuinely easy on a pouch. They're just empty of nutrition. The score isn't wrong; it's answering "will this flare me up?", not "will this nourish me?". Those are two different questions, and a food can be a clear yes on one and a flat no on the other.

It's the mirror image of the balanced-eating problem: a lot of nourishing foods (beans, broccoli, wholegrains) score amber, while some treat foods score green. If you only ever followed the colour, you'd end up comfortable but undernourished.

The good news: you don't have to leave green to eat well

Here's the part that surprises people. The green list isn't just treats — it's full of genuinely excellent food. Almost all the building blocks of a balanced diet are already green:

• Protein — white fish, chicken, eggs, lean beef and mince, firm tofu, hard cheese all sit deep in the green band.
• Calcium & vitamin D — canned salmon and sardines (eaten with the soft bones), hard cheese.
• Iron & B12 — red meat, eggs, canned fish.
• Omega-3 — oily fish like salmon and sardines.
• Gentle fibre & energy — porridge oats, peeled potato, firm banana, white rice.

So you don't need to reach for the higher-scoring foods to get your protein or your minerals. You just need to pick the nourishing greens over the empty ones.

A green day that actually feeds you

Here's what a genuinely balanced day looks like, built entirely from green foods — no amber required:

• Breakfast: porridge oats with a firm banana and a few strawberries. (Fibre, slow energy, a little fruit.)
• Lunch: canned salmon or tuna with white rice and some soft-cooked carrot and zucchini. (Protein, omega-3, calcium, gentle veg.)
• Dinner: chicken, lean beef or white fish with mashed potato and well-cooked greens — spinach or green beans — in a little olive or garlic-infused oil. (Protein, iron, more veg.)
• Snacks: hard cheese with rice crackers; a tub of lactose-free yoghurt; another banana.

That covers protein at every meal, calcium from the fish bones and cheese, iron and B12 from the meat and eggs, omega-3 from the oily fish, and fibre from the oats and cooked veg — and every single item is green.

Treat foods are fine — just not the foundation

None of this means jelly and chips are off the menu. There are no bad foods here; a treat that sits well with you is a genuinely good thing, especially in the early days when so much else feels off-limits. Enjoy them. Just don't let the colour talk you into making them the whole plate.

The simple version: use green to decide what's gentle, and use ordinary common sense to decide what's nourishing. When a food is green and full of good stuff — fish, eggs, oats, gentle veg — that's the sweet spot to build your meals around.

If you want the detail on which nutrients a green-leaning diet can miss and how to top them up, we've laid it all out in eating green isn't the whole diet.

One honest note

Our scores are modelled estimates of gut comfort, not dietary advice, and they can't tell you whether you're personally low in anything — only a blood test and your own clinical team can do that. Use the colour to eat gently, and a dietitian or GP to make sure you're eating well. The two together beat either one alone.