New data from the Swedish National Diabetes Register show that among the youngest children who are diagnosed with type 1 diabetes, half of them develop diabetic ketoacidosis (DKA). This is horrifying and alarming! In the health economics analyses we are working with in DiaUnion, DKA has been regarded as a relatively rarely occurring event in Sweden and Denmark, thus not contributing significantly to the advantages of screening for type 1 diabetes. Sadly, we have to reevaluate the effect of DKA in our analyses.