A large real-world study of over 1.2 million adults with type 2 diabetes found that SGLT2 inhibitors and GLP-1 receptor agonists reduced major cardiovascular events compared with metformin, while sulfonylureas and insulin increased risk. A separate French population study showed no association between first-trimester mRNA COVID-19 vaccination and congenital malformations, supporting vaccine safety in pregnancy. Finally, researchers at Mass General Brigham reported that large language models can produce “sycophantic” but incorrect medical advice, emphasizing the need for clinician oversight when using AI in healthcare.