Preventative healthcare is important for staying healthy. With the help of our review, prevention of many issues is easier than before. Prevention of disease is the process of taking preventive measures to prevent the development of diseases. Disease prevention can be divided into four broad categories: primary, secondary, tertiary, and primal. A study conducted by the American Heart Association revealed that about 400,000 people die in the US each year due to lifestyle factors such as obesity and poor diet. In 2000, 60% of deaths globally were attributed to chronic diseases. This is an increase from the previous year, which saw 60% of deaths attributed to these diseases.