Avocados
Avocados contain significant amounts of oleic acid, a healthy monounsaturated fat that helps boost good cholesterol and lower bad. Avocados are also rich in fiber and a plant chemical called beta-sitosterol, both of which help keep cholesterol in check.
Tip: Avocados significantly increase absorption of immunity-boosting antioxidants found in fruits and vegetables. Add a couple of slices of diced avocado to your next salad. — Pulp Photography/Corbis
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