You can keep your health costs down in retirement by frequently using preventative care, and working hard to stay healthy. You can also tame the costs by saving diligently in your retirement years, so that you have funds set aside for medical expenses.

There is also the ability to purchase long-term care insurance, which can kick-in later in life when you have daily care needs. The insurance is often designed to pay out a certain dollar amount each day to pay for your care.

If I Retire, Can I Keep the Health Plan My Employer Offered?
How Often Can I Contribute to My 401(k)?
How Can I Check if My Portfolio is Diversified?