false-color microscope image of muscle fibersWriting for neo.life, Robin Donovan (@RobinKD) explains that muscle loss, loss of strength and loss of function — sarcopenia — has a big impact on the quality of life and even lifespan of many people, but yet few have heard of it and there is little research on it. Experts are working on developing common diagnostic criteria while others are developing biomarkers of muscle wasting and testing ways to mitigate the disease’s impact, she writes. Image: Public domain via Wikimedia Commons