Health care in the United States can be very expensive. A single doctor’s office visit may cost several hundred dollars and an average three-day hospital stay can run tens of thousands of dollars (or even more) depending on the type of care provided. Most of us could not afford to pay such large sums if we get sick, especially since we don’t know when we might become ill or injured or how much care we might need. Health insurance offers a way to reduce such costs to more reasonable amounts.