As people age, the body's metabolism naturally slows down, which can impact weight management. Factors like hormonal changes including decreased levels of growth hormone and testosterone lead to reductions in muscle mass. Less muscle means a lower basal metabolic rate, resulting in fewer calories burned at rest. Additionally, older adults may become less active, further contributing to this decline in metabolic rate. Understanding these changes emphasizes the importance of maintaining a healthy lifestyle, including regular physical activity and balanced nutrition, to counteract age-related metabolic slowdown.