Here is a brief, factual summary of this medical article in Slovak: JAMA Medical News presents the nine most important medical studies published between October 2024 and September 2025. Key findings include: 1) GLP-1-based drugs reduce the risk of hospitalization and mortality in patients with obesity and type 2 diabetes. 2) Vaccination against shingles may reduce the risk of dementia. 3) The systematic review revealed the need for consensus-based frameworks for the evaluation of artificial intelligence in healthcare. 4) Lifestyle changes have led to improvements in cognitive function in adults at risk. 5) Active monitoring of low-risk DCIS is a safe alternative to standard treatment.