Which physical change is a normal part of aging?

Decreased muscle mass is recognized as a normal part of aging, a condition often referred to as sarcopenia. As individuals age, there is a natural decline in muscle mass and strength, which can be attributed to a variety of factors including hormonal changes, reduced physical activity, and nutritional deficiencies. This decline can impact mobility and overall physical function, leading to increased vulnerability to falls and injuries.

Understanding this change is crucial for managing health in older adults. It highlights the importance of regular physical activity, particularly strength training, and maintaining a balanced diet rich in protein to help mitigate the effects of muscle loss. Recognizing that decreased muscle mass occurs with aging can also inform healthcare providers when designing exercise programs that help improve or maintain strength and functional abilities in the elderly.

The other options reflect changes that are not typically observed with aging, making it important to differentiate between normal physiological changes and those that may indicate a health issue.