The Difference Between Clean Keto and Dirty Keto

Clean Keto, Dirty Keto

Yep-butter, bacon, and cheese are some of the high-fat foods that you can actually eat while on the keto diet, the country’s diet darling of the moment. Sounds too good to be true, right? (Jillian Michaels certainly thinks so.)

Well, it kinda is. Turns out, there’s a right way and a wrong way to do the keto diet-which experts have started to call “clean” and “dirty” keto. Here’s what you need to know.

How the Keto Diet Works

If you’re new to the keto diet, here’s the DL: Typically, your body sources most of its fuel from glucose (a sugar molecule found in carbohydrates). However, the keto diet is so low-carb and high-fat-with 65 to 75 percent of your calorie intake from fat, 20 percent from protein, and 5 percent from carbs-that it sends your body into ketosis, a process during which fat is burned for energy rather than glucose. (It takes a few days of eating super-low-carb to enter this state.)

“The keto diet is so popular right now because of its reputation for causing quick fat loss,” says Kim Perez, a nutritional therapy practitioner with Kettlebell Kitchen. (Just look at how the keto diet transformed Jen Widerstrom’s body in just 17 days.)

However, the source of the fat you eat doesn’t necessarily matter when you’re trying to lose weight on the keto diet-if you’re still in ketosis, it’s likely still “working,” says Perez. Bacon cheeseburgers, for example, are high in fat and protein and low in carbs, so they don’t disrupt your body’s state of ketosis. That means that technically they fit the keto diet parameters, and you can still lose weight. (Even though, at this point, it’s common knowledge that burgers certainly aren’t a health food.)

“Current research doesn’t tell us much about the long-term impacts of eating a diet so high in fat,” says registered dietitian and Arivale coach Jaclyn Shusterman, R.D.N., C.D., C.N.S.C. (Though initial research hints that the keto diet isn’t healthy in the long run.) “One of the important things to remember if you’re following a keto diet is that there are healthier-and less healthy-ways to follow this diet,” she says.

“To do keto the right way, you should always be supporting your health,” says Perez. “At some point, you’re going to pay for those foods that you’re eating.” Enter: the difference between clean and dirty keto.

Clean Keto vs. Dirty Keto-and Why It Matters

Clean keto is like a clean-eating version of the keto diet. It focuses on whole, unprocessed foods that are high in fiber and low in net carbs-but are still packed with other nutrients-such as avocados, green vegetables, coconut oil, and ghee, says Josh Axe, D.N.M., C.N.S., D.C., who’s been using the diet for 13 years, and refers to “dirty keto” in his book Keto Diet.

Dirty keto, on the other hand, is following the keto diet and adhering to its carb restrictions without actually steering clear of unhealthy foods. “The dirty keto approach includes lots of meat, butter, bacon, and pre-made/packaged convenience food,” says Perez. That also includes seemingly healthy things like protein bars, shakes, and other snacks that boast being sugar-free and low-carb. These foods aren’t made with health in mind, because, “when any diets become trendy, companies try to make money off of it by making processed foods [that fit the diet],” says Perez. (Related: Why One Dietitian Hates the Keto Diet)

“When people go on diets, they tend to gravitate towards the unhealthy part or asking the question: ‘What can I get away with?'” says Axe. “The other day I saw something called ‘the ultimate keto recipe’ online, and it was taking conventional cheese, frying it in butter, and putting bacon in the middle.”

As a long-time advocate of the keto diet, he said the popularity of dirty keto is concerning: “I don’t want people to just lose weight; I want people to heal,” he says. “Following the principles of the keto diet to get into ketosis can be healing in a lot of ways.” Research has looked at the possible links between following a strict keto diet to help manage polycystic ovary syndrome (PCOS), epilepsy, and other neurological diseases.

And, yes, you should care, even if you’re losing weight on the “dirty” version of the keto diet.

“The biggest foundation of weight loss is health,” says Perez. “If you have any inflammation, if your gut is imbalanced, if your hormones are off, if your blood sugar is off-all of those things are going to make weight loss a lot more difficult and maintaining that weight loss a lot more difficult.”

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