Children under seven years old should not have shop-bought slushies over health concerns about a chemical they contain, the Food Standards Agency (FSA) has said.
The government watchdog said slushed ice drinks containing glycerol – a type of sweetener – were unsafe for young children, and consumption of them should be limited for children aged between seven and 10.
Most slushies contain naturally occurring glycerol instead of sugar to stop them freezing solid, giving them the slushy effect.
The FSA said consuming large amounts of it can cause side-effects, including headaches and sickness, low blood sugar levels, shock, and loss of consciousness in children.
Prof Robin May, the FSA’s chief scientific advisor, said: “While these drinks may seem harmless and side effects are generally mild, they can, especially when consumed in large quantities over a short time, pose serious health risks to young children.”
The fresh FSA guidance comes following research indicating children under eight should completely avoid drinking slushies.
It studied the cases of 21 two- to seven-year-olds in the UK and Ireland who needed A&E treatment after becoming acutely ill within an hour of having the drinks, mostly between 2018 and 2024.
The children all recovered and were discharged from hospital.
Dr Duane Mellor from the British Dietetic Association told the BBC that it was “relatively rare” for children to suffer ill side-effects after drinking slushies containing glycerol.
The registered dietician said the “heat of the day”, dehydration and a child being excited could “exacerbate” symptoms linked to consuming the drink.
He recommended that children have water or cold milk as alternatives to slushies – or if they want a sweet drink, fruit flavoured water with ice cubes, a diet drink or a low-sugar ice lolly.
The FSA’s updated guidance is stricter than its previous advice, which said that under-fives should avoid slushies.
It now also says children aged seven to 10 should have no more than one 350ml slushy drink – “roughly the size of a fizzy drink can” – a day.
“We are asking parents and carers to take extra care when buying drinks for young children, particularly during warmer months when consumption of ‘slushies’ typically increases,” said Prof May.
This guidance also applies to ready-to-drink slushy pouches and make-at-home kits of slushy concentrates.
The FSA says its guidance should be on a “written warning at [the] point of sale” and that producers should make the drinks with the “minimum quantity” of glycerol “technically necessary to achieve the required ‘slush’ drink effect”.
It also recommends against vendors offering free slushy refills in venues where children under the age of 10 would likely consume them
