As a personal trainer focused on longevity and healthy eating, I stock up on protein-filled foods like frozen chicken and Greek yogurt at Costco. MSN: High-protein foods that are great for gut health, according to a registered dietitian You've probably noticed that more and more people are focused on their protein intake these days. But some high-protein foods — like many types of meat — aren't always easy on your digestive system.

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High-protein foods that are great for gut health, according to a registered dietitian AOL: The 10 Best High-Protein Foods to Eat For Lunch, According to Dietitians The 10 Best High-Protein Foods to Eat For Lunch, According to Dietitians If you want to up your protein intake on a plant-based diet, try swapping tofu for one of these protein-rich ingredients. Insider: I'm a 65-year-old fitness trainer who stocks up on healthy foods at Costco. These are the 11 products I swear by.