A cardiologist overhauled his diet to boost his longevity. Here's the grocery store path he takes to stick to his meal plan and avoid bad foods.

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• Ultra-processed foods are consistently linked to bad health outcomes, but they can be hard to avoid.
• A cardiologist writing a book about longevity decided to quit UPFs almost entirely.
• He shops the perimeter of the grocery store and enjoys more salads and yogurt.

When cardiologist Eric Topol goes to the grocery store these days, his cart stands out among the crowd. It's no longer filled with boxes or packaged goods, he says it's largely just fresh produce ...