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A healthy diet, in addition to exercise, is thought to be important for lowering health risks, such as obesity, heart disease, type 2 diabetes, hypertension and cancer.

These technologies can provide interactive services that are personalized to the patient’s condition and provide healthcare workers with patient education, pain assessment and medication teaching.

Global health is about worldwide health improvement including mental health, reduction of disparities, and protection against global threats that disregard national borders.

Global health is not to be confused with international health, which is defined as the branch of public health focusing on developing nations and foreign aid efforts by industrialized countries.

Other social sciences such as sociology, development studies, psychology, anthropology, cultural studies, and law can help understand the determinants of health in societies.

Both individuals and organizations working in the domain of global health often face many questions regarding ethical and human rights.

• Medicine describes the pathology of diseases and promotes prevention, diagnosis, and treatment. Public health emphasizes the health of population
• Epidemiology helps identify risk factors and causes of health problems.
• Demography provides data for policy decisions
• Economics emphasizes the cost-effectiveness and cost-benefit approaches for the optimal allocation of health resources.