What is the percentage of people in world have disease?

It is difficult to provide an exact percentage of people in the world who have a disease, as there are many different types of diseases and the prevalence varies widely depending on the location, socioeconomic factors, and other variables. However, according to the World Health Organization (WHO), approximately one in three people worldwide suffer from one or more chronic diseases. These include conditions such as heart disease, stroke, diabetes, cancer, chronic respiratory diseases, and mental health disorders. Additionally, there are numerous infectious diseases that affect different regions of the world, such as malaria, tuberculosis, HIV/AIDS, and various diarrheal diseases. The distribution and burden of diseases can also change over time due to factors such as improved healthcare, vaccination campaigns, and changes in lifestyle and environmental factors.