I'm a doctor who studies longevity. Here are 8 things I always put in my Trader Joe's cart — and 4 I never buy.

I’m a board-certified internal medicine physician who studies longevity, so I’m used to people asking me how to live longer.

Often, they expect a prescription, a supplement stack, or some expensive scan.

However, the most honest answer I can give them is in a grocery cart.

Mine gets filled at Trader Joe’s most weeks, and I’m not chasing superfoods or miracle ingredients.

Rather, I’m looking for foods that deliver fiber, healthy fats, and protein without the sodium and added sugar that can easily accumulate in a modern diet.

Here are a few things that always go in my cart, plus what I intentionally leave out.

Spoiler alert: One of my must-buy items isn’t even food.