ANATOMY

Detailed explanation-1: -Disuse (physiologic) atrophy is caused by not using your muscles enough. If you stop using your muscles, your body won’t waste the energy it needs to take care of them. Instead, your body will start to break your muscles down, which causes them to decrease in size and strength.

Detailed explanation-2: -Muscle atrophy is when muscles waste away. It’s usually caused by a lack of physical activity.

Detailed explanation-3: -You may ask, “How long does it take for muscles to atrophy?” Experts suggest that muscles start to shrink after four to six weeks of inactivity. However, this timeline varies from person to person. For instance, athletes tend to lose muscle mass more quickly than sedentary people.

Detailed explanation-4: -Lack of physical activity due to an injury or illness, poor nutrition, genetics, and certain medical conditions can all contribute to muscle atrophy. Muscle atrophy can occur after long periods of inactivity. If a muscle does not get any use, the body will eventually break it down to conserve energy.

Detailed explanation-5: -Vitamin D deficiency is also known to lead to muscle atrophy both in animals and humans (8, 16–18). Muscle wasting results because of an altered balance in the protein degradation and synthesis rates (19).