Ageing is the natural process of growing older, which affects all living organisms. It involves gradual changes in physical, mental, and emotional functions over time. Factors such as genetics, lifestyle, and environmental influences can impact how quickly or slowly a person ages. As people age, they may experience a decline in physical abilities, such as strength and flexibility, and may also face health challenges like heart disease or arthritis. Mental changes can include memory loss or slower cognitive processing. Understanding ageing helps in promoting healthy lifestyles and improving the quality of life for older adults.