Muscle wasting, also known as muscle atrophy, is a condition where muscle mass decreases due to various factors. This can occur from lack of physical activity, aging, or underlying health issues such as cancer or chronic diseases. When muscles are not used regularly, the body breaks down muscle tissue for energy, leading to a reduction in size and strength. Symptoms of muscle wasting include noticeable weight loss, weakness, and difficulty performing everyday tasks. It can affect anyone but is more common in older adults or those with prolonged illnesses. Early intervention through exercise, nutrition, and medical treatment can help manage and potentially reverse muscle wasting.