A cardiologist eats 90 grams of fiber a day without trying. Here's her breakfast, lunch, and dinner.

Dr. Danielle Belardo runs a preventive cardiology practice in Los Angeles. She said it's easier to maintain a high-fiber diet using frozen fruits and vegetables than fresh. Danielle Belardo/Precision Preventive Cardiology Most Americans eat half the recommended daily amount of fiber. A vegan cardiologist eats 90 grams of fiber a day thanks to her plant-based diet. Fiber can lower "bad" cholesterol levels, help you feel full, and reduce the risk of cancer. Most of us don't eat enough fiber....