By Tarun Sai Lomte Reviewed by Lauren Hardaker May 8 2026 Scientists developed an AI-powered MRI body composition calculator using data from over 66,000 adults, revealing how hidden changes in fat and muscle with age can signal future risks of diabetes, heart disease, and premature death. Study: Body Composition in the General Population: Whole-body MRI–derived Reference Curves from Over 66 000 Individuals . Image credit: Radiological imaging/Shutterstock.com In a recent study published in