What is the Difference Between Paleo and Vegan?

The two diets get compared constantly because they are both restrictive and both popular, but they are not competing versions of the same idea. They rule out opposite halves of the supermarket for entirely different reasons. This page sets out what each one actually allows, where they overlap, what each one is short of, and what happens if you try to do both at once.

Paleo vs Vegan: The Short Comparison

	Paleo	Vegan
Eats	Meat, fish, poultry, eggs, vegetables, fruit, nuts, seeds	Vegetables, fruit, grains, legumes, nuts, seeds
Avoids	Grains, legumes, dairy, refined sugar, most processed food	Meat, fish, poultry, eggs, dairy, honey
Reasoning	Humans are best adapted to pre-agricultural food	Animals should not be farmed or killed for food
Main protein	Animal protein	Legumes, tofu, tempeh, nuts, seeds
Usually short of	Calcium, fiber	Vitamin B12, iron absorption
Flexible about	Nothing much, though some allow dairy	Processed food, which can be entirely vegan

The sharpest way to see the difference: a lentil curry is vegan and not paleo. A steak is paleo and not vegan. A bowl of roasted vegetables is both.

What You Can Eat on Paleo

Paleo is built on the idea that agriculture arrived too recently for human digestion to have adapted to it, so grains, legumes and dairy come out. Whether that reasoning holds is argued over, but the food list itself is consistent.

In: lean and fatty meats, ideally grass-fed; fish, particularly oily fish like salmon, mackerel and sardines; eggs; all non-starchy vegetables; fresh fruit; nuts and seeds; and fats from olive oil, avocado and coconut.

Out: all grains, so bread, pasta, rice, oats and cereal; all legumes, so beans, lentils, peas, peanuts and soy; dairy in most versions; refined sugar; and processed food generally.

Two things surprise people. Peanuts are legumes, not nuts, so they are out. And potatoes are argued about endlessly, with white potatoes usually excluded and sweet potatoes usually allowed.

What You Can Eat on a Vegan Diet

Vegan is a simpler rule with a wider larder: nothing from an animal, and everything else is on the table. That includes the entire category paleo rejects, which is why the two lists look so different.

In: vegetables, fruit, all grains, all legumes, nuts, seeds, plant oils, and the whole aisle of tofu, tempeh, seitan, plant milks and meat substitutes.

Out: meat, fish, poultry, eggs, dairy and honey. Less obviously: gelatine, some refined sugars, and a long tail of additives.

The distinction worth holding onto is that vegan says nothing about processing. Hot chips, biscuits and soft drink are frequently vegan. A whole-food plant-based diet and a vegan diet are not the same thing, and most of what people credit to going vegan comes from the first rather than the second.

Where the Two Diets Fall Short

Both can be managed well and both have a predictable weak spot, which is a function of what each one removes.

Nutrient	On paleo	On vegan
Calcium	Harder without dairy, so leafy greens and small fish matter	Usually fine from greens, tofu and fortified milks
Fiber	Lower, since grains and legumes are the biggest sources	Generally high
Vitamin B12	Covered by meat, fish and eggs	Needs a supplement or fortified food, not optional
Iron	Well absorbed from meat	Present in plants, but absorbed less readily without vitamin C alongside
Protein	Easy	Needs a bit of planning, not difficult

B12 is the one that is not a matter of planning harder. It is not reliably available from plants, so a vegan diet needs a supplement or fortified foods.

What Are the Drawbacks of the Paleo Diet?

Five come up repeatedly, and they are worth reading before starting rather than after.

1. Nutrient gaps. Calcium, vitamin D and fiber are the usual ones, because dairy, grains and legumes are all out at once.
2. Cost. Grass-fed meat, fish and nuts are the expensive end of the shop, and paleo leans on all three.
3. Social friction. Eating out on paleo is harder than on most diets, because grains turn up in almost everything.
4. The evidence is thinner than the enthusiasm. There is research on paleo, but far less long-term data than the confidence of the claims around it suggests.
5. Restriction has its own risks. A rigid list of banned foods is not a good fit for everyone, and for some people it makes eating harder rather than simpler.

Veganism has its own version of that list, mostly around B12, iron, eating out, and the gap between vegan and actually nourishing.

Can You Be Paleo and Vegan at the Same Time?

You can, and it is the most restrictive commonly attempted way of eating. Take paleo, remove meat, fish and eggs, and what is left is vegetables, fruit, nuts, seeds and oils. No grains, no legumes, no dairy, no animal protein.

That combination has a real problem to solve, and it is worth being blunt about it: the two diets remove every convenient protein source between them. Vegan protein is mostly legumes and soy, and paleo rules out both. What remains is nuts, seeds and a handful of vegetables, which is a genuinely narrow base to build on.

Anyone writing a paleo vegan food list that includes brown rice, quinoa, oats, lentils or chickpeas has quietly reverted to ordinary veganism. Those are all grains or legumes.

If the combination appeals but the arithmetic does not, the usual landing spot is the pegan diet.

What is the Pegan Diet?

Pegan is paleo and vegan blended and softened: mostly plants, whole foods, low sugar, with small amounts of high-quality animal food such as fish, pasture-raised eggs and occasional meat. Some legumes and grains are allowed in moderation, which is precisely the compromise strict paleo will not make.

It is looser than either parent diet, and that is the point. Most people who try full paleo vegan for a month end up somewhere near pegan by the third month.

Which One Should You Choose?

The honest answer is that the label matters less than what the label makes you do. Both diets push you towards vegetables, away from ultra-processed food, and towards cooking rather than buying, and that shared ground is where most of the benefit sits.

So the useful questions are practical ones. Which foods would you actually miss? Which list can you shop and cook for on a normal week? If your reason is ethical, vegan is the only one of the two that answers it. If you know grains and dairy do not agree with you, paleo is already close to how you eat. If neither fits cleanly, pegan exists for that reason.

Either way, a diet you abandon in five weeks does nothing. The one that works is the one you can still be doing at Christmas, and anyone making a significant change to how they eat, particularly with a health condition in the picture, should talk it through with a doctor or dietitian first.

Frequently Asked Questions

Is paleo or vegan healthier?

Neither wins as a category, because both can be done well or badly. A vegan diet of chips and biscuits and a paleo diet of processed meat are both poor. What the better versions have in common is whole foods, plenty of vegetables and very little refined sugar.

Can vegans eat paleo food?

Only the overlap: vegetables, fruit, nuts, seeds and plant oils. The paleo staples of meat, fish and eggs are all out, and the vegan staples of legumes, tofu and grains are not paleo, so the shared list is smaller than either diet on its own.

What is the difference between paleo and an animal-based diet?

Paleo is built on whole unprocessed food and includes a large amount of plant material: vegetables, fruit, nuts and seeds. An animal-based diet centres on animal products and can be far narrower, in some versions excluding plants almost entirely. Paleo is not carnivore.

What is the difference between paleo and pegan?

Pegan keeps paleo's emphasis on whole food but is mostly plants and allows moderate amounts of legumes and grains, which strict paleo excludes. It is the softer, more sustainable version for most people.

How is paleo different from a standard diet?

A typical modern diet is built on grains, dairy, refined sugar and processed food, which are the four things paleo removes first. That is the whole difference, and it explains why the change feels so large in the first fortnight.

Do you lose weight on paleo or vegan?

Some people do and some do not, on both. Both diets remove a large slice of what people usually overeat, which tends to reduce total intake without counting anything, and both can be eaten in quantity without that happening. Neither is a weight loss program, and results vary a great deal between individuals.

Can you eat peanuts on paleo?

No. Peanuts grow underground and are legumes rather than nuts, so they are excluded along with beans and lentils. Almonds, walnuts, cashews and macadamias are all fine.

Is dairy allowed on paleo?

Not in the standard version, since dairy arrived with farming. Some people following paleo do include butter, ghee or full-fat fermented dairy, which is a common relaxation rather than the rule.

If the reason you are comparing diets is that food has not been agreeing with you, the diet label may not be the useful variable. Our gut health hub works through the specific foods that cause the most trouble, and Trish Tucker-May, our resident nutritionist, covers the same ground from the clinical side.