However, some nutrition experts say a true keto diet may be too strict and unsustainable for many people, so being a little lax on the rules—also known as "lazy keto"—can still bring benefits.

If you're curious to try a high-fat, low-carb keto diet but don't want to spend time tracking every bite you eat, there's a more casual approach. The "lazy keto" diet keeps carbohydrates below ...