While the economy hasn't been its best this year, some experts predict that things could actually worsen in 2023. The U.S. could enter a full recession next year, potentially roiling the stock market even further.

However, investors shouldn't panic. There are plenty of companies that can survive even the worst economic downturn. Buying shares of such businesses can help investors sleep peacefully regardless of whether a recession comes.

Let's examine two robust companies to buy to help recession-proof a portfolio: Medtronic (NYSE: MDT) and HCA Healthcare (NYSE: HCA).

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Source Fool.com