Which health care concept focuses on preventing illness rather than treating it after onset?

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Preventive care focuses on stopping illness before it starts. It aims to reduce risk and keep people healthy through actions like vaccinations, healthy lifestyle choices, and screenings that detect problems early. Because the emphasis is on preventing disease rather than addressing it after it appears, this concept fits best. Treatment, on the other hand, deals with managing or curing a disease once it has already begun. Rehabilitation centers on restoring function after illness or injury, and palliative care focuses on comfort and quality of life for those with serious, often advanced illness. So prevention is the correct focus here.