A nutritionist swears by the 'triple 30' rule to eat enough protein and fiber for gut health and longevity

A nutritionist recommends planning your meals around the triple 30 rule: 30 grams of protein per meal, 30 grams of fiber per day, and 30 different plants a week. Alina Rudya/Bell Collective/Getty Images A nutritionist uses a simple diet strategy to boost energy, improve gut health, and curb cravings. Her 'triple 30' rule makes it easier to get enough protein and fiber without overdoing it. It's all about adding healthy foods to your diet, including treats like dark chocolate and popcorn. Fo...