Saturated fat has spent forty years being either the cause of everything or an exonerated innocent, depending on which decade’s paperback you read. The 2023 WHO guideline is worth reading precisely because it is boring.
The recommendation
The WHO recommends that everyone aged two and over takes no more than 10% of total energy intake from saturated fatty acids, and no more than 1% from trans-fatty acids, counting both industrially produced and ruminant sources.
Ten per cent of energy is easier to picture than it sounds. On a 2,000 kcal day, 10% is 200 kcal, and fat carries 9 kcal per gram — so roughly 22 grams of saturated fat. That is two generous knobs of butter plus a piece of hard cheese, and you have spent it.
The half of the sentence people drop
The guideline does not stop at “eat less”. It says saturated fat should be replaced with polyunsaturated or monounsaturated fat, or with wholegrain carbohydrate — and the replacement is doing much of the work.
This is why the old trials look contradictory when you line them up. Cutting saturated fat and replacing it with refined starch and sugar does close to nothing for cardiovascular risk. Cutting it and replacing it with vegetable oils, nuts and oily fish does. The same “reduce saturated fat” instruction produced two different results because the instruction was incomplete.
A low-fat biscuit is a swap from saturated fat to refined starch. That is the swap the evidence says not to make.
What EFSA says, and why it looks different
EFSA does not set a percentage. Its dietary reference values list saturated fat as “as low as possible” — the same phrase it uses for trans fats — while giving a reference range of 20–35% of energy for total fat, an adequate intake of 4% of energy for linoleic acid and 0.5% for alpha-linolenic acid.
That is not a disagreement with the WHO. It is a different job. EFSA is answering “what intake meets requirements and has no established safe lower bound”, and saturated fat has no requirement — the body makes what it needs. The WHO is answering “what is a workable public-health target”. One says there is no floor; the other says here is a practical ceiling.
What this looks like at the shop
Nothing exotic. The changes that move a diet from roughly 14% to under 10% are the dull ones:
- Cook in olive or rapeseed oil rather than butter, most of the time.
- Treat processed meat as an occasional item rather than a default protein.
- Notice that pastry, chocolate, cream sauces and cheese are where most of the saturated fat in a European diet sits — not in a steak.
- Eat oily fish, nuts or seeds often enough that the unsaturated side of the ledger is real rather than theoretical.
A label helps: EU packaging lists “of which saturates” under total fat, per 100 g, which makes two brands of the same product directly comparable in about four seconds.
What we are not saying
We are not saying saturated fat is poison, that a full-fat yoghurt is a mistake, or that any single food needs to go. Ten per cent of energy is a budget, and budgets are spent, not avoided. The failure mode this guideline cares about is a diet where saturates sit at 15% and the replacement calories are white bread — not one where someone eats cheese on a Friday.
