Ageing refers to the biological changes that occur in a person over time. They are usually both physical and mental. With the increased longevity due to advancement in medicine and technology, it is estimated that in the next five years, for the first time ever there will be more people in the world aged over 60 than children aged less than five. The main health challenges for older people everywhere are non-communicable diseases or lifestyle diseases such as heart disease, stroke, cancer, diabetes, and chronic lung disease.
