Three major studies reshape preventive care. Long-term follow-up from diabetes prevention trials, published in The Lancet Diabetes & Endocrinology, shows that achieving remission of prediabetes—normalizing glucose levels—cuts cardiovascular death or heart failure risk by about 50%, with benefits lasting decades. In The Lancet, a multicohort analysis of 540,000 adults found obesity increases risk of severe infection by 70%, with nearly threefold higher infection-related hospitalization or death in severe obesity. Finally, a randomized trial in The Lancet Child & Adolescent Health found no increased risk of eczema or respiratory illness in infants receiving acetaminophen versus ibuprofen, providing reassurance about its safety.