Age-related changes refer to the natural physical and mental transformations that occur as individuals grow older. These changes can include a decline in muscle mass, bone density, and skin elasticity, as well as alterations in vision and hearing. The body's metabolism may slow down, leading to weight gain or difficulty in maintaining energy levels. Cognitive functions can also be affected, with some individuals experiencing memory lapses or slower processing speeds. However, many people retain their ability to learn and adapt throughout their lives. Understanding these changes can help in promoting healthy aging and improving quality of life for the elderly population.