Kidney Beans are both high in carbs and low in fats, which are the exact opposite of the macros required on a keto diet. The ideal macronutrient ratio for keto is 70% fat, 20-25% protein, and 5-10% carbs. This means the majority of your foods should be both low in carbs and high in fats.
Consequently, what beans is Keto-friendly?
Keto-friendly Bean and Lentil Substitutes: Black Soybeans and Green beans. On the keto diet, it is best to go beanless or use the lowest carb beans — black soybeans and green beans — as substitutes for their starch-filled cousins.
Similarly one may ask, why beans are not Keto?
Legumes — like beans and lentils — are pretty much off limits. That’s unfortunate. “Legumes are loaded with fiber and antioxidants,” says Glassman. While they may offer an impressive source of digestion-friendly fiber, black beans pack about 12 g of net carbs in just ½ cup.