One’s age significantly affects metabolism due to physiological changes that occur over time. As individuals age, muscle mass tends to decrease, which slows down the metabolic rate. Additionally, hormonal changes can influence how the body processes nutrients. Younger individuals typically have a higher metabolism, allowing them to burn calories more efficiently. In contrast, older adults may require fewer calories and more focused nutrition to manage their weight and health. Therefore, understanding the age-related shifts in metabolism is crucial for adapting dietary and exercise routines.