Feeding toddlers tiny amounts of peanuts could treat their allergy within three years, a study suggests. Peanut allergy affects about one in 50 children in the UK, it is often lifelong and can lead to constant worry about severe allergic reactions. While mild reactions can cause an itchy mouth and nausea, severe allergic reactions cause anaphylaxis - a swelling of the tongue and throat. But researchers at Karolinska Institutet have successfully treated children aged one to three years with peanut allergies by feeding them small amounts daily, which were gradually increased over time until they didn’t have an allergic reaction. “All children who followed the protocol achieved the goal of eating three and a half peanuts without experiencing an allergic reaction, and most were able to consume up to 25 peanuts,” said Professor Caroline Nilsson, from the Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, and senior consultant at Sachs' Children and Youth Hospital.…