The ketogenic diet is currently all the rage. It focuses on high-fat, low-carb consumption, and allows you to indulge in meat, eggs, and even dairy. Business Insider reported that Dr. Charles Seltzer, a nutritionist based in Philadelphia warns against pregnant women trying the keto diet as it restricts nutrient-rich foods like fruit. According to Dr. Seltzer “Nourishing your baby is the most important thing when you are pregnant.