Heart surgeon's grocery shopping tips

Dr Jeremy London, a cardiothoracic surgeon, shares a grocery shopping method prioritizing ingredients over marketing claims.

His first bucket is produce: fresh fruits, vegetables, and raw meat with no labels, defined as single-ingredient items.

The second bucket is packaged whole foods like eggs, nuts, and milk; he advises checking ingredient lists to avoid unnecessary additives.

The third bucket is not fully described in the provided text, but the method encourages focusing on ingredients rather than packaging.