Common Foods & Drinks: Quick Decisions
What the evidence says about the things actually in your trolley
3 min read·Updated June 2026
This section exists to answer the question people actually have standing in a supermarket aisle or looking at a menu: is this fine? The verdicts below apply to the average healthy adult eating a generally varied diet — not to anyone with a specific diagnosed condition, who should follow medical advice over a general table.
| Food / drink | Verdict |
|---|---|
| Bread | Wholemeal/wholegrain over white most of the time; white bread occasionally is not a problem |
| Pasta / rice | Wholewheat pasta and brown rice over white most of the time; portion size matters more than the colour |
| Potatoes | A nutritious whole food despite the reputation — it's the butter, cheese, and frying that add the calories |
| Breakfast cereal | Check sugar per 100g — under ~5g is good; muesli/porridge/wholegrain over sugary cereals |
| Eggs | Fine daily for most people — dietary cholesterol has minimal effect on blood cholesterol for the majority[71] |
| Butter vs olive oil | Olive oil as the default for cooking and dressing; butter occasionally is fine — neither needs to be banned |
| Milk (whole vs skimmed) | Either is fine — the difference is fat calories, not a health verdict; pick based on calorie goals |
| Yoghurt | Plain/Greek over flavoured — flavoured versions often carry as much sugar as dessert |
| Cheese | Fine in normal portions (a matchbox-sized serving); easy to overeat by volume, not inherently unhealthy |
| Nuts | A small handful daily is genuinely beneficial — easy to overeat by volume since they're calorie-dense. Walnuts and almonds specifically are a good source of vitamin E, magnesium, and plant omega-3s |
| Cruciferous vegetables (broccoli, cauliflower) | Contain sulforaphane, which activates the body's own antioxidant and detox pathways — worth prioritising over other vegetables when choosing, not just eating vegetables generally |
| Berries | Contain plant compounds that cross into the brain, associated with improved memory and reduced oxidative damage — a good default fruit choice |
| Dark leafy greens | A concentrated source of magnesium, folate, and dietary nitrates, which support blood flow and brain health |
| Liver | Among the most nutrient-dense foods available — B12, iron, vitamin A, and CoQ10 (a compound involved in cellular energy production) in a single small serving; worth eating occasionally even if not a weekly staple |
| Peanut butter | Choose the kind with just peanuts and salt; versions with added sugar/palm oil are closer to a spread than a health food |
| Canned fish (tuna, salmon, sardines) | As nutritious as fresh and a cheap source of protein and omega-3 — a genuinely good staple |
| Deli meats / cold cuts | Processed meat — treat as occasional, not daily (see Section 4) |
| Coffee | Fine, and likely net beneficial for most adults — counts toward fluid intake[72] |
| Tea | Fine; similar profile to coffee with less caffeine |
| Fruit juice | Treat as a sugary drink, not a fruit serving — whole fruit has the fibre juice lacks |
| Smoothies | Homemade with whole fruit/veg is fine; shop-bought can carry as much sugar as a soft drink — check the label |
| Diet/zero-sugar drinks | A reasonable substitute for sugary drinks — see Section 3 on sweeteners |
| Energy drinks | The caffeine is fine in moderation (~3-6mg/kg is a reasonable ceiling); the sugar in non-diet versions is the real issue |
| Ready meals | Check protein and fibre, not just calories — many are low in both; not inherently bad, just check the label |
| Frozen vegetables | Nutritionally equivalent to fresh in most cases — frozen at peak ripeness, often more convenient[73] |
| Protein bars | A convenience tool, not a health food — check sugar content; whole food is usually cheaper and as effective |
| Chocolate | Dark over milk if choosing on nutrition grounds; either is fine in a normal portion as an occasional food |
Science Verdict
Recommendation: None of the foods above need to be eliminated. The pattern that matters is what fills most of your trolley and most of your plate, not whether you occasionally buy the "wrong" version of any single item.
Evidence strength: Strong