(Worth noting: That’s 40-60% fewer carbs than the usual recommended dietary amount.) So, if you eat 2,000 calories a day, that means that only 100 of them are coming from carbs-including healthy carbs like fruits and vegetables.

In a typical keto diet plan, fat provides as much as 80% of your daily calories, while a mere 5% comes from carbohydrates, explains Jessica Cording, R.D., author of The Little Book of Game-Changers. But, of course, nothing is perfect and there are keto side effects to be aware of if you’re considering the diet.

The keto diet has become one of the most popular nutrition fads in recent years, with celebrities from Katie Couric to the Kardashians extolling its benefits.