Jesy Nelson gave birth to her twin girls prematurely in May 2025 - now she's revealed her six-month-olds have been diagnosed with a life-changing illness

This image from video provided by UPMC and University of Pittsburgh Health Sciences shows Doug McCullough, who has spinal muscular atrophy, during tests of experimental spinal cord stimulation to improve muscle function in Pittsburgh, on March 14, 2023.

Loss of muscle mass (muscle atrophy) can be a result of aging or lifestyle habits, like being inactive or eating a poor diet. Muscle loss can also point to hormone abnormalities or underlying health conditions. Sudden or unexplained muscle loss calls for ...

Muscle-on-chip systems are three-dimensional human muscle cell bundles cultured on collagen scaffolds. A Stanford University research team sent some of these systems to the International Space Station to study the muscle atrophy commonly observed in ...

Muscle loss can creep up faster than you think. Whether it’s due to injury, life changes or simply taking a break from working out, the body begins to change almost immediately when you stop using it. Understanding just how quickly muscle can disappear ...