It starts in childhood — for the whole family
The same plate suits adults and children, but children are not small adults. Here's what changes.
Post-mortem studies of children and teenagers who died from other causes have found the very first stage of artery furring — fatty streaks — already present in childhood. The eating habits formed in the early years tend to set the template for life. None of this is a reason to make children anxious about food; it's a reason to build good, easy defaults early, so healthy eating feels normal rather than like a diet.
👨👩👧 For adults
- It's never too late — arteries respond to better eating at any age.
- The principles in this guide are your everyday template, not a short-term fix.
- If you're cooking for a family, you're modelling habits as much as feeding people. Children copy what they see on your plate.
- Eat together where you can — shared, unhurried meals are linked to better diets all round.
🧒 For children — what's different
- Don't restrict or "diet" a child. Children need energy and nutrients to grow. Healthy eating for a child means better quality food, not less of it.
- Full-fat, not low-fat, when young. Whole milk to age 2, then semi-skimmed can be introduced from 2 if they're growing well; skimmed isn't suitable under 5 (UK guidance).
- Let appetite lead. Children self-regulate well — don't force a clean plate. Growth (tracked by your health visitor / GP), not portion compliance, is the measure.
- Sugar is the priority to limit, not fat or "carbs" in general. Whole fruit, plain dairy and real meals; sweet drinks and concentrated treats kept occasional.
- Vitamin D: UK advice is a daily supplement for all under-5s (and breastfed babies from birth).
Important guardrail
This guide is about healthy eating, not weight loss — especially for children. Never put a child on a restrictive or weight-loss diet without guidance from a GP, paediatrician or registered dietitian. If you have concerns about your or your child's weight, growth or relationship with food, that's a conversation for a health professional, who can give safe, personalised advice.
Free sugar: what the guidance actually says, by age
Paediatric MASLD (Metabolic dysfunction-Associated Steatotic Liver Disease, formerly non-alcoholic fatty liver disease) is now one of the most common chronic liver conditions in children in high-income countries — affecting an estimated ~10% of all children and 30–40% of children with obesity. The driver is rarely any single food: it's the daily drip-feed of small treats at school, with friends, and after dinner. Frequency matters more than any individual item, and stacking multiple treats in one day matters more than the dose of any single one.
From age 2 onward, the UK Scientific Advisory Committee on Nutrition (SACN) and the NHS use age-banded "free sugar" limits — these are stricter and more granular than the American Heart Association's single 25g figure (which applies to all children 2–18). Free sugars include added sugars plus sugar in fruit juice, honey, and syrups — but exclude naturally occurring sugars in whole fruit and plain milk.
UK SACN / NHS daily free-sugar limits
The single most important behavioural rule: if a child wants something sweet daily, whole fruit is the safest choice — the fibre matrix is intact and the portion is naturally self-limiting. Concentrated treats (chocolate, sweets, cake, ice cream, biscuits) are best kept to occasional, not daily, allowing the liver and pancreas a recovery window.
⚠ The stacking trap — why the per-treat frequencies below are not a menu
The table below shows what's reasonable for each treat individually. It is not a daily checklist. If your child has chocolate and a flapjack and ice cream and a juice on the same day — each at its individual "fine" frequency — you've blown the daily sugar budget several times over. Here's the maths a parent could easily miss:
60g of free sugar in a single day — over 3× the SACN limit for a 5-year-old, 2.5× the limit for a 10-year-old.
The rule that actually works: on any given day, pick one concentrated treat — not three or four. The table tells you "1 fun-size chocolate is OK 2–3 days/week" — that means up to 3 chocolate-days per week, with the other 4 days having no concentrated treat at all. Whole fruit and plain dairy are unrestricted; the table is specifically governing the concentrated-treat allowance.
Per-treat portion & frequency guidance — by age
Read each row as: "if having this treat, the appropriate portion for a child of this age is X, on no more than Y days/week, and not stacked with other treats on the same day." Frequencies are practical heuristics consistent with staying within SACN daily limits; they are not formal guidelines.
| Treat | Typical content | Age ~5SACN: 19g/day | Age ~10SACN: 24g/day | Age ~15SACN: 30g/day |
|---|---|---|---|---|
| Chocolate | ~25g sugar, ~8g sat fat / 45g bar | 2 squares (~7g sugar)1–2 days/wk | 1 fun-size bar (~12g sugar)2–3 days/wk | 1 standard bar (~25g sugar)2–3 days/wk |
| Ice cream | ~12–18g sugar, ~5–8g sat fat / scoop | ½ small scoop1 day/wk | 1 small scoop1–2 days/wk | 1–2 scoops1–2 days/wk |
| Sweets / gummies | ~20–25g sugar / small pack | ½ fun-size pack (~8g)1 day/wk | 1 fun-size pack (~15g)1–2 days/wk | 1 small pack (~20g)1–2 days/wk |
| Cake / biscuits | ~15–25g sugar, ~4–8g sat fat / slice | 1 small biscuit or thin slice1 day/wk | 1 small slice or 2 biscuits1–2 days/wk | 1 standard slice1–2 days/wk |
| Flapjack / cereal bar | ~12–18g sugar / bar (often marketed as "healthy" but typically isn't) | ½ bar1–2 days/wk | 1 bar2–3 days/wk | 1 bar2–3 days/wk |
| Crisps (low sugar but high sat fat & sodium) | ~2–4g sat fat, ~150–200mg sodium / small bag | ½ small bag (15g)1–2 days/wk | 1 small bag (25g)2–3 days/wk | 1 small bag (25g)2–3 days/wk |
| Fruit juice | ~15g sugar / 150ml (free sugars released by juicing) | 100ml max≤ 3 days/wk, with food | 150ml max≤ 4 days/wk, with food | 150ml maxdaily OK with meals |
| Soft drinks / soda | ~35g sugar / 330ml can | avoid | ¼ can / special occasions onlyAHA cap: 240ml/wk total | ½ can / special occasionsAHA cap: 240ml/wk total |
| Fast-food meal | ~40–60g sugar + ~10–15g sat fat / meal | small kids' meal with water≤ 1 day/wk | kids' meal with water≤ 1 day/wk | standard meal with water≤ 1 day/wk |
🕵 Hidden sugars — the "healthy" foods that aren't
A large share of children's daily added sugar comes from foods marketed as healthy. Always check the label — the "of which sugars" line per 100g is the figure that matters. Common culprits:
- Flavoured yoghurts — often 12–18g sugar per pot, more than a digestive biscuit. Choose plain Greek yoghurt and add whole fruit yourself.
- Kids' breakfast cereals — many contain 25–35g sugar per 100g; Frosties, Coco Pops, Crunchy Nut all qualify. Porridge, plain Weetabix, Shredded Wheat are dramatically lower.
- Granola and "cereal" bars — frequently 25–30% sugar by weight. Often confused with healthy snacks because they contain oats.
- Fruit juice and smoothies — the juicing process releases the sugars from the fibre matrix; a 150ml glass of orange juice contains the same free sugar as a 150ml glass of Coke. The fibre that makes whole fruit safe is largely gone.
- "Wholemeal" supermarket bread and baked beans — both routinely contain added sugar. Baked beans in particular: typically 5g sugar per half-tin.
- Sauces and condiments — ketchup (~22g/100g), barbecue sauce, sweet chilli, sweet pickles. A child who drowns their dinner in ketchup nightly can easily hit 5–10g of hidden sugar per meal.
Single best swap: replace flavoured yoghurt with plain Greek yoghurt + whole fruit + a drizzle of honey if needed. This one substitution typically cuts 10–15g of free sugar from a daily snack while keeping the protein and calcium.
Adjust for activity and overall daily diet. A child who has just had a 60-minute football session can absorb more carbohydrate than a sedentary day allows for, and an active child meeting their daily 60-minute moderate activity target (NHS recommendation) has a meaningfully larger metabolic margin than a sedentary one. Sleep matters too — short sleep in children is now an established independent risk factor for childhood obesity and metabolic syndrome. The treat allowances above assume an otherwise balanced diet with adequate protein, vegetables, and movement; they are not licences to ignore the rest of the picture.