Family Physicians as System-Specific Specialists in Japan's Aging Society.

Family medicine is a vital medical specialty in an aging society. The scope of each family doctor's training and practice varies according to the context of their work, their roles, the organization and resources of the health systems in each country, and their ability to adapt to the healthcare needs of their country. As societal requirements change, so does the role of family medicine. In Japan, family physicians' educational systems were officially established in 2017 as the nineteenth specialty, following discussions among family physicians, general internal medicine physicians, and hospitalists. Family physicians' specialization in systems could facilitate access to appropriate health resources with proper timing while respecting the culture and context of each patient. Therefore, family physicians can be systems specialists on the same basis as organ and other specialists. Family physicians include people and families in their ecological systems. Family physicians should therefore specialize in healthcare systems.