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What it is. An intense sweetener around 200 times sweeter than sugar, used in tiny amounts.

Why it is used. Sweetens diet drinks, sugar free gum and low calorie desserts.

What the evidence says. In 2023 IARC listed it as possibly carcinogenic, its weakest evidence tier. At the same time the expert intake committee JECFA kept the safe daily limit unchanged, noting you would need a very high daily intake to approach it, roughly a dozen or more cans of diet drink a day for an adult. So headline scary, practically low concern for normal use.

Permitted with an acceptable daily intake. People with the condition PKU must avoid it, which is why packs carry a phenylalanine note.

Assessed against IARC, JECFA, EFSA. Full entry for E951

What it is. The orange pigments found in carrots and other vegetables, either extracted or made synthetically.

Why it is used. Colours margarine, soft drinks, dairy, and sweets.

What the evidence says. The same compound the body turns into vitamin A, and safe at the levels used in food. High dose beta-carotene supplements have been linked to harm in smokers, but those doses are far above anything a colour in food delivers, and conflating the two is a common mistake.

Permitted. The supplement findings apply to concentrated doses, not to food colouring.

Assessed against EFSA, JECFA. Full entry for E160A

What it is. A mild acid found naturally in citrus fruit, made commercially by fermentation.

Why it is used. Adds tartness, balances flavour and helps preserve. One of the most used additives in food.

What the evidence says. Safe at food levels. No credible health concern for the additive itself.

Permitted freely.

Assessed against EFSA, JECFA. Full entry for E330