A study from Karolinska Institutet found that people with diabetes, especially type 1, are at a higher risk of complications after stent surgery. The study looked at over 160,000 patients who received drug-eluting stents and found that those with type 1 diabetes were more than twice as likely to experience complications, such as artery narrowing or blood clots, compared to those without diabetes. The risk is highest in the first few months after surgery. Researchers say treatment and follow-up care for patients with diabetes may need to be adjusted.