Dr. Rupy Aujla told Business Insider he follows a high protein, high-fiber, "plant-forward" diet.

Many of us are busy juggling kids, work, and school. Grabbing packaged snacks and meals is quick and convenient, but that may come at a cost.

Scientists are still untangling how meal size and timing affect health. But they know one thing: It’s probably best to avoid making dinner your largest meal.