The research was carried out by a charity based in the UK.
Only one in twenty children's yoghurts claim to have healthy levels of sugar.
Action On Sugar found some yoghurts in supermarkets contained up to 22 grams of sugar.
That's the equivalent of five and a half teaspoons of sugar, or even 16 biscuits.
‘In the researchers’ ranking of the most sugary yoghurts marketed at children, Nestlé Rolo mix-in toffee yoghurt topped the table with 5.5 teaspoons of sugar per 22g serving, equivalent to 16 malted milk biscuits.’ - almost equivalent to daily adult limit https://t.co/6TwVnozvt0
— kent buse (@kentbuse) August 19, 2021
100 products were tested that are found on supermarket shelves.
The study found more than half of these had a third or more of a child's maximum daily intake.
Dietician Sarah Keogh says the results and the study are extreme.
"Usually what people are picking up are the dessert type yoghurts," she says about the research.
