The keto diet is known for its extremes. “By nature, the keto diet isn’t fully balanced,” says Keri Glassman, RD, a nutritionist in New York City. Just look at the ratios in a usual keto diet food list: People on a keto diet aim to eat upwards of 80 percent of their calories from fat. They’ll also eat very few carbs. So, for the most part, you’ll skip out on fruits, legumes (like beans and lentils), most dairy, starchy vegetables, and whole grains.
And while you don’t need fruit alone or beans alone to be healthy, when taken altogether and eliminating multiple foods, you can wind up with a less-than-nutritious diet.
Whole-grain quinoa may be protein-rich, but that doesn’t mean it fits with keto. A ½-cup serving contains 17 g of net carbs, which can easily eat up your carb budget.