Just as British summer hits full swing, the UK’s Food Standards Agency (FSA) has dropped a warning: slushies may not be so child-friendly after all. In an urgent new advisory, the FSA has warned parents to steer clear of giving slush ice drinks to children under seven, especially those containing a chemical called glycerol. And for kids between seven and ten? Keep it to a strict 350 ml a day.What’s So Dangerous About a Slushie?Slushies may seem like they beat the heat, but beneath that colour lies a syrupy science experiment. Most commercial slush drinks get their signature texture from glycerol, a compound that keeps ice from freezing into one giant block and gives slushies their semi-liquid, chewable charm. The trouble is, glycerol is harmful when consumed in large quantities, especially by small bodies.According to the FSA, excessive intake of glycerol in a short span can cause mild symptoms like nausea, headaches and vomiting. But in more severe cases, children can suffer from dangerously low blood sugar, go into shock, or even lose consciousness. The Risks Are Real and Rising This warning did not come out of nowhere. The FSA has seen a surge in reports of children collapsing after drinking slushies. In many of these cases, the affected kids had consumed slush drinks in large amounts over a short period. Summer’s New Parenting RuleThe FSA is urging parents and carers to be vigilant. Before buying a slushie, they recommend asking vendors whether the drink contains glycerol. If you are not sure, play it safe, especially with younger kids. Parents should also keep an eye on home-use slush kits and ready-to-drink slush pouches, which may also include this ingredient.The shops have now also been instructed to stop offering free slushie refills for children under 10 and to use the minimal amount of glycerol necessary to get that slushy texture.What to Do If a Slushie Turns SourIf your child starts feeling queasy or dizzy after downing a slushie, do not panic, but do act. In mild cases, giving them a sugary snack or drink can help stabilise blood sugar levels. But if your child seems lethargic, confused, or unresponsive, call 999 immediately. It is better to be overly cautious than to risk a serious health episode.Slushie Season, But Make It SaferThis new advice arrives just ahead of the school summer holidays, the peak slushie season in the UK. As temperatures soar, these icy drinks will be everywhere. The message from the FSA is clear: slushies are not forbidden, but they are not harmless either. Especially when they are packed with glycerol and served up to tiny tummies.