Jennifer Mattson

MakeItGrateful.com

Let’s start with the name for this new eating craze: the Pegan diet.

It's a cross between, you guessed it, paleo and vegan. This buzzworthy concoction is the brainchild of functional medicine doctor Mark Hyman, who first wrote about it on his blog in 2014. But it’s only really been in the last year or so that the trend has caught on. (Even Pinterest is reporting a 337% increase in people searching for the term.) For five years, Hyman has been eating as a Pegan, and he also has a cookbook, "FOOD: What the Heck Should I Cook?," featuring his recipes.

FOOD IS MEDICINE

Hyman – who is the director of the Cleveland Clinic Center for Functional Medicine and founder and director of The UltraWellness Center – believes food has the power to change our health and reverse chronic illness. His philosophy is that food is medicine, and he often tells his patients to get their nutrients from plants, fruits, nuts, seeds and oils, high-quality meats and sourced fish, not from vitamin supplements, if possible.

HOW PALEO AND VEGAN DIETS ARE SIMILAR

There is a lot of crossover when it comes to these two diets. They both focus on real, whole, fresh food that is sustainably raised. Both are high in vegetables and fruits – although the paleo camp suggests you stick to lower glycemic fruits, like berries. Both stress eating organic, no or low GMO foods, without chemicals, additives, preservatives, dyes, MSG or artificial sweeteners. They both cut out all dairy, like milk, cheese and butter.

More:The ugly sides of meal plans: Why they’re not for everyone

HOW PALEO AND VEGAN DIETS DIFFER

The biggest difference between them is that paleo eaters consume animal products, meat and fish. The paleo camp says if you eat animal products, they should be sustainably raised or grass-fed. And if you eat fish, it should be low in mercury and toxins (good options include sardines, herring, anchovies or wild salmon). Vegans do not eat animal products of any kind.

We chatted with Hyman to break down the Pegan diet and compare it with some other popular eating plans.

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How does the Pegan diet work?

While Pegan involves leaving out certain foods – like refined sugar and flour, conventionally raised animal products and chemical additives – it’s so much more focused on what we can eat for optimal health. Eating this way means you don’t have to count calories because when you eat the whole, nutrient-dense foods, you’re naturally satiated. The Pegan diet integrates science and common sense into an inclusive food philosophy that focuses on eating the best foods.

How does Pegan differ from Whole30?

The biggest difference between them is that Pegan includes low-glycemic grains and legumes (except peanuts) and Whole30 does not. Whole30 also completely excludes alcohol and sugar of any kind. While I recommend limiting alcohol intake and avoiding refined sugars in the Pegan diet, you can still enjoy an occasional adult beverage or a small portion of dessert made with less-processed sweeteners like maple syrup or dates.

How does Pegan compare to the keto diet?

The keto diet can be really useful for some people, but it’s not for everyone. This diet was originally created to help those with epilepsy, as the ketones produced from a fat-heavy diet can actually help alter genes of energy metabolism in the brain and help to stabilize neurons that can relate to epileptic seizures. Lots of people find keto helps their brain function better and it can be helpful for weight loss. It also can be good for reversing type 2 diabetes. But going back to the personalization of diet, some people don’t feel great on keto, so we all have to find what works best for us.

What is the big takeaway here?

The big takeaway is that our bodies are amazing, intuitive machines that know what to do when we feed them the right way. Sadly, the root cause of most chronic disease is too much bad food and not enough good food. Functional medicine examines the root causes of disease, and food is both the cause and cure for most chronic disease today, such as diabetes, heart disease, cancer and dementia. But we can change that by eating real foods, which our bodies use as energy and by accumulating information about what controls every single aspect of our biology.

OTHER EATING PLAN OPTIONS

Dr. Nate Favini, with Forward, says while he supports the paleo-vegan diet’s emphasis on healthy fats and vegetables, he recommends a plan closer to a Mediterranean-paleo diet.

“I’ve noticed that some vegans and vegetarians rely on processed food for convenience, so I love that this is a vegan option that stays away from processed food as well,” Favini says. If you’re trying to lose weight or reverse diabetes, he recommends a low-carb paleo or ketogenic diet. If you’re trying to maintain your weight, lower your risk of heart disease or just eat for longevity, he wants you to include fish and a reasonable amount of whole grains, as in a Mediterranean diet.

More:15+ vegan recipes to try

Clinical nutritionist Natalia Rose says she likes the Pegan diet over paleo or vegan diets. Rose says she prefers a vegetable-centric diet (90 percent vegetables) or the green-centric diet (90 percent green vegetables) for more advanced practitioners. In the end, though, if you do go Pegan, she recommends minimizing fruit, starches and oils and, of course, loading up on those green vegetables.

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