The ketogenic (keto) diet focuses on high-fat, moderate-protein, and very low-carb foods. For those following this plan, fast food might seem off-limits—but many chains now offer keto-friendly options ...

A keto diet restricts carbs to less than 50 grams per day for ketosis. Seafood is a good keto choice because it's carb-free and high in essential nutrients. Full-fat dairy products help maintain ...