A “paleo vegan” diet, more commonly called the pegan diet, is a hybrid eating approach that combines the core ideas of paleo and plant-based diets. The term was coined by Dr. Mark Hyman, who outlined 21 principles for the approach in his 2021 book. The central idea: fill 75% of your plate with vegetables and treat meat as a side dish, while avoiding dairy, most grains, and processed foods. It borrows paleo’s emphasis on whole, unprocessed foods and plant-based eating’s focus on vegetables, fruits, nuts, and seeds.
How Paleo and Vegan Principles Merge
Paleo and vegan diets seem like opposites. Paleo is typically high in fat and animal protein, while plant-based diets lean higher in carbohydrates and lower in fat. But they share more common ground than most people realize: both reject processed foods, refined sugar, and industrial seed oils. Both prioritize vegetables and whole foods over anything from a package.
The pegan diet sits in the middle. It keeps paleo’s stance against dairy and most grains but adopts plant-based eating’s insistence that vegetables dominate the plate. Hyman recommends 6 to 8 cups of vegetables daily, with nonstarchy vegetables making up about three-quarters of every meal. Meat is included but repositioned as a condiment or side rather than the centerpiece.
What You Can Eat
The food list is more flexible than either strict paleo or strict vegan, though it still has clear boundaries. According to Cleveland Clinic, the pegan diet includes:
- All vegetables, with nonstarchy varieties (leafy greens, broccoli, cauliflower, peppers) forming the bulk of meals
- All fruits, with a preference for lower-sugar options like berries, pears, cherries, and apples
- Nuts and seeds (almonds, cashews, pumpkin seeds, chia seeds), except peanuts, which are technically legumes
- Healthy fats from avocado oil, olive oil, and coconut oil
- Eggs
- Meat and poultry, ideally organic and grass-fed, in smaller portions
- Fish, especially low-mercury options like salmon, sardines, and anchovies
- Dairy alternatives without added sugar, such as unsweetened nut milk or coconut yogurt
A few foods are allowed in small amounts: legumes like lentils and black beans (up to one cup per day), gluten-free grains like quinoa and black rice, and very occasional sugar or desserts. A typical grocery run might include leafy greens, sweet potatoes, avocados, wild salmon, berries, lentils, and herbs like turmeric, basil, and parsley.
What Gets Restricted
The pegan diet cuts out several food groups entirely or nearly so. Dairy is off the table, replaced by nut-based or coconut-based alternatives. Most grains, especially anything containing gluten (wheat, barley, rye), are excluded. Refined sugar, processed foods, and industrial vegetable oils are all avoided.
Legumes get a partial pass, which is a notable departure from standard paleo rules. Where strict paleo eliminates beans entirely, the pegan approach allows small servings of lentils and black beans. This matters for practical reasons: without legumes or grains as reliable staples, getting enough protein and fiber on a mostly plant-based plate becomes significantly harder.
Potential Health Benefits
The pegan diet’s emphasis on vegetables, healthy fats, and whole foods aligns with patterns that research consistently links to better health outcomes. Filling most of your plate with nonstarchy vegetables naturally lowers the glycemic load of meals, which helps keep blood sugar more stable after eating. The focus on low-glycemic fruits (berries rather than bananas, pears rather than tropical fruit) reinforces this.
The diet is also built around foods that tend to reduce chronic inflammation: fatty fish rich in omega-3s, olive oil, leafy greens, and nuts. Cutting out processed food, refined sugar, and industrial oils removes many of the dietary drivers of inflammation that are common in standard Western eating patterns. For people whose current diet leans heavily on packaged foods, the shift toward whole foods alone could make a meaningful difference in how they feel day to day.
Nutritional Gaps to Watch For
Restricting dairy and most grains does create some nutritional blind spots. Calcium is the most obvious one, since dairy is the primary source for most adults. You would need to be intentional about eating calcium-rich vegetables like kale and broccoli, or choosing fortified nut milks, to make up the difference.
Vitamin B12 is another concern, particularly if you lean heavily toward the plant-based end of the spectrum and eat animal products sparingly. Research shows that B12 deficiency is remarkably common among people who limit animal foods: studies have found deficient B12 levels in roughly 50 to 70 percent of vegetarians and vegans across multiple countries. A daily supplement of 50 to 100 micrograms is generally effective at preventing deficiency for those who eat little meat. Since the pegan diet does allow eggs, fish, and some meat, your risk depends on how much of those foods you actually include.
Iron, zinc, and vitamin D can also run low when dairy and grains are limited, since fortified cereals and milk are major sources for many people. Paying attention to iron-rich plant foods (lentils, spinach, pumpkin seeds) and getting adequate sunlight or supplementing vitamin D helps close these gaps.
How It Differs From Paleo and Whole30
If you are comparing the pegan diet to standard paleo, the biggest difference is the ratio of plants to meat. Paleo in practice often becomes a meat-heavy diet, with vegetables as a side. The pegan framework flips that, making meat the smaller portion and vegetables the foundation. It is also more lenient with legumes than strict paleo, which eliminates them entirely.
Compared to Whole30, the pegan diet is designed as a long-term eating pattern rather than a 30-day reset. Whole30 is an elimination protocol meant to be temporary, with foods reintroduced afterward. The pegan diet does not have an end date. It also permits small amounts of sweeteners and grains that Whole30 forbids during its active phase.
Is There Research Behind It?
No clinical trials have tested the pegan diet as a defined protocol. The concept is based on combining principles from two dietary patterns that do each have substantial research support: Mediterranean and plant-forward diets have strong evidence for heart health and longevity, and paleo-style diets have shown short-term benefits for blood sugar and weight in some studies. But the specific combination that Hyman outlines has not been studied on its own.
That said, the individual components are hard to argue with. Eating more vegetables, choosing whole foods over processed ones, favoring healthy fats, and limiting sugar are recommendations that virtually every major nutrition guideline agrees on. The pegan diet essentially packages these ideas with stricter rules around dairy and grains. Whether those additional restrictions offer meaningful benefits beyond a generally healthy whole-foods diet is an open question, and for some people they may make the diet harder to sustain without clear added payoff.
Making It Work in Practice
The biggest practical challenge is building satisfying meals when grains and dairy are mostly off the table. A weeknight dinner might look like roasted salmon with a large plate of roasted broccoli and sweet potatoes drizzled with olive oil, or a stir-fry built on cauliflower rice with vegetables, cashews, and a small portion of chicken. Lentil soup with leafy greens, avocado on its own, and handfuls of nuts and seeds become reliable staples.
Grocery costs can run higher than average, since the diet emphasizes organic produce, grass-fed meat, and wild-caught fish. For people on a budget, prioritizing organic for the most pesticide-heavy produce (strawberries, leafy greens, peppers) and buying conventional for the rest is a reasonable compromise. Frozen wild salmon and canned sardines are more affordable protein options that still fit the guidelines. Buying lentils and black beans dried rather than canned keeps legume costs minimal.
The diet works best for people who already enjoy cooking and are comfortable building meals from scratch. If you rely heavily on convenience foods, grains as a base (pasta, bread, rice), or dairy as a protein source, the transition will feel significant. Starting by gradually increasing your vegetable intake and reducing processed foods, rather than overhauling everything at once, tends to be more sustainable than a sudden switch.