The concept of public health covers all services offered to protect and improve the health of individuals and society and to provide the best services in the field of treatment/rehabilitation. In this way, all situations that are common in society, frequently lead to death, create a burden on the health economy, and in short, affect the health welfare of the society and are considered as the subject of public health. All steps to be taken to protect and improve the health of individuals, societies, and countries are evaluated within the framework of public health. Although the systematics and organization of health services vary from country to country, they are basically classified as preventive, therapeutic, and rehabilitative services. The provision of health services should be accessible, sustainable, and inclusive of all humanity. Otherwise, if there is no balanced policy in service delivery, the desired goals will not be achieved. In order to bring a health principle based on the principle of equality to certain standards throughout the world, basic targets are determined and countries organize studies to achieve these targets. The aim is to provide healthcare services equally to everyone and more to those in need. Health services should be urgently provided by all countries in the world, especially in regions where health needs are felt intensely, such as ongoing wars and mass deaths in many parts of the world today. Failure to understand and persistence of inequalities in health care, it will first affect individuals and societies, and this effect will spread all over the world.