Paleo Keto Diet: How to Combine Them, Your Carb Ceiling, a Food List and a Counted Sample Day

By:
On:
In: Diet Comparisons
With: 0 Comments
Paleo Keto Diet: How to Combine Them, Your Carb Ceiling, a Food List and a Counted Sample Day

By Paleo Life Coach Editorial Team · Last updated October 19, 2026 · Checked against Harvard T.H. Chan diet reviews, the ADA nutrition consensus report, PubMed and USDA FoodData Central

You’ve cut grains and sugar, you like how paleo feels, and now you’re wondering whether to take carbs lower. Or you’re already eating keto and want to drop the cheese, cream and sweetener-heavy “keto” snacks. Either way you end up at the same place: a paleo keto diet, which follows both sets of rules at once. This guide shows how the two rule sets stack, where the carb ceiling sits for your calorie level, what each food costs in carbs, and what a full day adds up to when you count it with USDA data.

The quick version: A paleo keto diet uses only paleo foods (meat, fish, eggs, non-starchy vegetables, nuts, seeds, avocado, olive oil and a few berries) and keeps carbohydrate at ketogenic levels, usually under 50 g a day. Paleo’s rules remove grains, legumes, dairy and sweeteners. Keto’s carb limit removes sweet potatoes, bananas and honey.

What is a paleo keto diet?

A paleo keto diet is a ketogenic diet built only from paleo foods. Every food has to pass two tests: paleo’s ingredient test and keto’s carbohydrate test.

The two tests come from different places. Harvard’s diet review describes paleo as lean meats, fish, shellfish, eggs, nuts, seeds, fruits, vegetables, olive oil and coconut oil, with grains, dairy products, legumes, refined sugars and most processed foods left out (Harvard T.H. Chan, Paleo Diet). Its keto review says a ketogenic diet “typically reduces total carbohydrate intake to less than 50 grams a day” and can go as low as 20 g, with about 70-80% of calories from fat, 5-10% from carbohydrate and 10-20% from protein (Harvard T.H. Chan, Ketogenic Diet).

Put them together and you get this rule set:

What is a paleo keto diet?
Rule Comes from What it means on your plate
No grains, legumes or refined sugar Both No bread, rice, oats, beans, lentils or sugar
No dairy Paleo No cheese, cream, milk or yogurt, which regular keto leans on for fat
No sugar-free “keto” products Paleo No bars, sweets or drinks built on sugar alcohols and sweeteners
Carbohydrate under about 50 g a day Keto No sweet potatoes, plantains, winter squash, bananas, honey or maple syrup
Most calories from fat Keto Olive oil, avocado, nuts and fattier cuts at every meal
Moderate protein Keto Normal portions of meat and fish, not double portions

Sources: allowed and excluded food lists and macronutrient ranges in the Harvard T.H. Chan paleo and ketogenic diet reviews linked above.

That’s stricter than either diet alone. If you’re still deciding between the two, or want the full side-by-side, read our paleo vs keto comparison first. The rest of this page assumes you want to do both.

How many carbs can you eat on a paleo keto diet?

Aim for 20 to 50 g of carbohydrate a day. Paleo sets no carb number at all, so the ceiling comes entirely from the keto side.

Three references agree on the range. Harvard gives under 50 g and as low as 20 g, or 5-10% of calories. The American Diabetes Association’s consensus report says very low-carbohydrate eating plans often aim for 20 to 50 g of “nonfiber carbohydrate per day to induce nutritional ketosis” (Evert et al., Diabetes Care 2019). The Cochrane review of low-carbohydrate trials classed diets as very low at 50 g a day or less, or under 10% of total energy (Naude et al., 2022).

To turn the percentage into grams, multiply your calories by the percentage and divide by 4, because a gram of carbohydrate supplies about 4 calories.

How many carbs can you eat on a paleo keto diet?
Daily calories 5% of calories 10% of calories Ceiling to use
1,600 20 g 40 g 20-40 g
2,000 25 g 50 g 25-50 g
2,400 30 g 60 g 30-50 g (the 50 g cap comes first)

Worked example: 2,000 kcal x 0.10 = 200 kcal from carbohydrate; 200 / 4 = 50 g. Percent range and 50 g cap from the Harvard ketogenic diet review.

Notice what happens at 2,400 calories: 10% of calories is 60 g, which is above the 50 g cap. For bigger eaters the gram cap is the tighter rule. At 1,600 calories it’s the other way round, and 10% is only 40 g. If you don’t know your calorie needs, the site’s TDEE and macro calculator gives you an estimate to start from.

Should you count total carbs or net carbs?

Count total carbohydrate, and track fiber next to it. Harvard’s limit is written as total carbohydrate. The ADA report counts non-fiber carbohydrate, which is total carbs minus fiber. Harvard also points out that “net carbs” is an unregulated label term, and that the sugar alcohols subtracted on packaged foods can still raise blood sugar. That caveat matters less here, because whole paleo foods aren’t sweetened with sugar alcohols.

The food list below shows both numbers. A day that stays under 50 g total, like the sample day further down, is inside the range whichever way you count.

How fast you reach ketosis varies. Harvard describes the shift to fat as the main fuel after about 3 to 4 days of very low carbohydrate intake, and says the timing and ketone levels differ from person to person.

What can you eat on a paleo keto diet?

You can eat meat, poultry, fish, shellfish and eggs, non-starchy vegetables, avocado, olives, nuts and seeds, paleo cooking fats, and small portions of berries. Plain meat, fish and oils contain no carbohydrate, and a large egg has 0.4 g. Almost your whole carb budget goes on plants, so that’s where the counting happens.

What can you eat on a paleo keto diet?
Food (serving) Total carbs (g) Fiber (g) Non-fiber carbs (g)
Leafy and salad vegetables
Arugula, 2 cups (40 g) 1.5 0.6 0.8
Spinach, raw, 2 cups (60 g) 2.2 1.3 0.9
Romaine, 2 cups shredded (94 g) 3.1 2.0 1.1
Cucumber with peel, 1 cup sliced (104 g) 3.8 0.5 3.3
Other low-starch vegetables
Mushrooms, white, 1 cup pieces (70 g) 2.3 0.7 1.6
Asparagus, 6 medium spears (96 g) 3.7 2.0 1.7
Zucchini, 1 cup chopped (124 g) 3.9 1.2 2.6
Cabbage, 1 cup chopped (89 g) 5.2 2.2 2.9
Cauliflower, 1 cup chopped (107 g) 5.3 2.1 3.2
Broccoli, 1 cup chopped (91 g) 6.0 2.4 3.7
Brussels sprouts, 1 cup (88 g) 7.9 3.3 4.5
Vegetables to portion
Tomato, 1 medium (123 g) 4.8 1.5 3.3
Carrot, 1 medium (61 g) 5.8 1.7 4.1
Onion, 1/2 cup chopped (80 g) 7.5 1.4 6.1
Red bell pepper, 1 cup chopped (149 g) 9.0 3.1 5.9
Fatty fruits and berries
Olives, ripe, 10 large (44 g) 2.7 0.7 2.0
Avocado, 1/2 fruit (100 g) 8.5 6.7 1.8
Strawberries, 1/2 cup halves (76 g) 5.8 1.5 4.3
Raspberries, 1/2 cup (62 g) 7.4 4.0 3.4
Blueberries, 1/2 cup (74 g) 10.7 1.8 8.9
Nuts and seeds
Pecans, 1 oz (28 g) 3.9 2.7 1.2
Macadamia nuts, 1 oz (28 g) 3.9 2.4 1.5
Almonds, 1 oz (28 g) 6.1 3.5 2.6
Cashews, 1 oz (28 g) 8.6 0.9 7.6

Calculation: per-100 g values for raw foods from USDA FoodData Central (SR Legacy) multiplied by the serving weight shown. Non-fiber carbs = total carbohydrate minus fiber, computed before rounding.

Three patterns stand out:

  • Vegetables are cheap, but they add up. A cup each of zucchini, cabbage, cauliflower and broccoli totals 20.4 g. That’s a good use of the budget, not a problem.
  • Berries differ a lot. Half a cup of blueberries has 10.7 g of carbohydrate; the same volume of raspberries has 7.4 g, and more than half of that is fiber.
  • Not all nuts are equal. An ounce of cashews has more than twice the carbohydrate of an ounce of pecans or macadamias.

Which paleo foods don’t fit a keto carb limit?

Starchy roots, most fruit and paleo sweeteners don’t fit. Using the same USDA data, one medium raw sweet potato (130 g) has 26.2 g of carbohydrate, a medium banana 27.0 g, a tablespoon of honey 17.3 g and a cup of cubed butternut squash 16.4 g. Any one of them takes half or more of a 50 g day.

Which keto foods aren’t paleo?

Cheese, cream, butter, peanuts and peanut butter, soy foods, and packaged “keto” snacks made with sweeteners. Ghee (clarified butter) is the common exception: it’s still a dairy fat, but many paleo plans allow it. Our paleo cooking oils guide explains where each fat falls.

Where does the fat come from on keto without dairy?

It comes from oils, avocado, nuts, eggs, and the fat in meat and fish. On regular keto, butter, cream and cheese do a lot of this work. Without them, you’ll pour more oil than you’re used to.

Where does the fat come from on keto without dairy?
Fat source Total fat (g) Saturated fat (g) Paleo?
Avocado oil, 1 tbsp (14 g) 14.0 1.6 Yes
Olive oil, 1 tbsp (13.5 g) 13.5 1.9 Yes
Pecans, 1 oz (28 g) 20.4 1.8 Yes
Avocado, 1/2 fruit (100 g) 14.7 2.1 Yes
Macadamia nuts, 1 oz (28 g) 21.5 3.4 Yes
Beef tallow, 1 tbsp (12.8 g) 12.8 6.4 Yes
Ghee, about 1 tbsp (12.8 g) 12.8 7.7 Gray area
Coconut oil, 1 tbsp (13.6 g) 13.5 11.2 Yes
Coconut milk, canned, 4 tbsp (60 g) 12.8 11.3 Yes

Calculation: per-100 g values from USDA FoodData Central (SR Legacy) multiplied by the serving weight shown.

The saturated fat column is the one to watch. The Dietary Guidelines for Americans, 2025-2030 say saturated fat should not exceed 10% of total daily calories (Dietary Guidelines for Americans, 2025-2030). On a 2,000-calorie diet that is 200 calories, or about 22 g, because fat provides 9 calories per gram (USDA National Agricultural Library). Two tablespoons of coconut oil supply 22.4 g on their own.

Harvard’s keto review makes the same point: an emphasis on foods high in saturated fat runs against the Dietary Guidelines and may have adverse effects on LDL cholesterol, but the diet can be modified “to emphasize foods low in saturated fat such as olive oil, avocado, nuts, seeds, and fatty fish.” All five are paleo. Our paleo diet cholesterol guide covers what the trials found.

What does a paleo keto day look like when you count it?

A paleo keto day looks like eggs and vegetables cooked in oil, a big salad with oily fish and avocado, meat with two vegetables, and nuts with a few berries. Here’s one such day, with every item totaled from USDA FoodData Central.

What does a paleo keto day look like when you count it?
Meal What’s on the plate Calories Fat (g) Protein (g) Total carbs (g) Fiber (g)
Breakfast 3 large eggs scrambled in 1 tbsp avocado oil with 1 cup mushrooms and 1 cup zucchini 375 28.9 22.5 7.2 1.9
Lunch 1 can (92 g drained) sardines with bones over 2 cups arugula and 1 cup cucumber, 1/2 avocado, 2 tbsp olive oil, 1 tbsp lemon juice 619 52.6 26.4 14.8 7.9
Dinner 6 oz (170 g) roasted chicken thigh with skin, 6 asparagus spears, 1.5 cups cauliflower, 1.5 tbsp olive oil 630 45.6 44.7 11.7 5.2
Snack 1 oz pecans, 1/2 cup raspberries 228 20.8 3.3 11.3 6.8
Total 1,852 148 97 45 22

Calculation: USDA FoodData Central SR Legacy per-100 g values x portion weights. Vegetables, avocado, nuts and berries are raw weights; chicken is cooked weight without bone; sardines are drained; oils are 14 g, 27 g and 20 g. Entries used: egg 171287, avocado oil 173573, mushrooms 169251, zucchini 169291, sardines 175139, arugula 169387, cucumber 168409, avocado 171705, olive oil 171413, lemon juice 167747, chicken thigh 173625, asparagus 168389, cauliflower 169986, pecans 170182, raspberries 167755. No salt, drinks or seasonings counted.

By the usual 4-4-9 calorie factors, that’s about 10% of calories from carbohydrate, 20% from protein and 70% from fat, at the edge of Harvard’s ketogenic ranges for all three. Total carbohydrate is 45 g. Non-fiber carbohydrate is 23 g. For a stricter day, drop the raspberries and half the cauliflower, which brings total carbohydrate to about 34 g.

How was the 45 g carb budget spent?

How was the 45 g carb budget spent?
Food group in the sample day Total carbs (g) Fiber (g)
Six vegetables plus lemon juice 24.1 8.4
Avocado, 1/2 8.5 6.7
Raspberries, 1/2 cup 7.4 4.0
Pecans, 1 oz 3.9 2.7
Eggs, 3 1.1 0
Total 45.0 21.8

More than half the carbohydrate came from vegetables. There’s very little slack: add one medium sweet potato to this day and total carbohydrate goes from 45 g to 71 g. Add a banana and it’s 72 g. A tablespoon of honey takes it to 62 g.

The fat tells its own story. Of the 148 g, about 50 g came from the eggs, sardines and chicken, 35 g from the avocado and pecans, and 61 g, or 41%, from roughly 4.5 tablespoons of poured oil.

Does the sample day cover your nutrients?

Not completely. Here’s the same day against the Daily Values the FDA uses on food labels (FDA):

Does the sample day cover your nutrients?
Nutrient Sample day FDA Daily Value Share of Daily Value
Fiber 21.8 g 28 g 78%
Calcium 660 mg 1,300 mg 51%
Potassium 3,232 mg 4,700 mg 69%
Magnesium 268 mg 420 mg 64%
Sodium (before any added salt) 754 mg 2,300 mg 33%
Saturated fat 25.5 g 20 g 128%

Calculation: USDA FoodData Central values for the sample day divided by FDA Daily Values. The saturated fat and sodium Daily Values are limits to stay under, not targets.

Three things are worth acting on:

  1. Calcium is the weak spot. The can of bone-in sardines supplies 351 mg of the day’s 660 mg. Without it, the day provides about 310 mg. Our guide to paleo calcium and nutrient gaps lists the non-dairy sources that help.
  2. Saturated fat is over the limit even with olive oil. At 25.5 g it’s about 12% of the day’s calories, above the 10% guideline. Swapping the chicken thigh for 170 g (raw weight) of farmed Atlantic salmon brings it to about 23.7 g.
  3. Your choice of cooking fat changes everything. Cook the same day with coconut oil instead of the olive and avocado oils and saturated fat rises from 25.5 g to about 68 g, or 33% of calories.

Fiber, potassium and magnesium all land between 64% and 78% of the Daily Value, and they come almost entirely from the vegetables, avocado and nuts. That’s the practical argument against cutting vegetables to save carbs. Harvard’s review makes it too, naming fiber, B vitamins, iron, magnesium and zinc as nutrients to protect on a ketogenic diet.

What does the research say about combining paleo and keto?

No controlled trial has tested a combined paleo keto diet. A PubMed title search we ran on October 8, 2026 for “paleo” or “paleolithic” together with “keto” or “ketogenic” returned three papers. One is a review comparing the diets for blood pressure. One is a 15-person pilot trial that put a modified paleo diet and a ketogenic diet in separate groups (Lee et al., 2021). The third is a single-patient case report. None measures what happens when people follow both sets of rules.

So the evidence has to be borrowed from each parent diet:

  • Weight. The Cochrane review pooled 61 randomized trials with 6,925 participants and concluded there is “probably little to no difference” in weight loss between low-carbohydrate and balanced-carbohydrate weight-loss diets for up to two years. The trials enrolled adults with overweight or obesity, and in those without type 2 diabetes the difference was about 1 kg (Naude et al., 2022).
  • Stricter isn’t automatically better. A BMJ meta-analysis of 23 trials in people with type 2 diabetes found improvements in weight loss and triglycerides at six months that diminished by 12 months. Very low-carbohydrate diets were less effective for weight loss than less restrictive low-carbohydrate diets at six months, a gap the authors traced to adherence (Goldenberg et al., 2021).
  • Paleo. Harvard’s review notes that paleo trials have shown short-term benefits over guideline diets, but the earlier ones were small (under 40 people) and lasted six months or less.

The honest reading: a paleo keto diet is a stricter version of two diets whose long-term advantages are small or unproven. Its real appeal is practical. It removes the processed “keto” products and gives very low-carb eating a whole-food base. If you’d rather not go this low, our guide to paleo diet carbs per day covers the moderate range.

Who should talk to a doctor before starting a paleo keto diet?

Anyone with a medical condition or a prescription, and several groups in particular. A very low-carb diet changes blood sugar, fluid balance and blood lipids quickly, so the checks belong at the start, not after problems appear.

  • Diabetes medication. The ADA consensus report says a very low-carbohydrate plan “can cause diuresis and swiftly reduce blood glucose,” and that consulting a knowledgeable practitioner at the onset is necessary to prevent dehydration and to reduce insulin and other glucose-lowering medicines so blood sugar doesn’t fall too low (Evert et al., 2019). A 2026 review adds that SGLT2 inhibitors carry a risk of diabetic ketoacidosis when combined with a ketogenic diet (Dyńka et al., 2026). Never adjust a dose on your own. See paleo and type 2 diabetes for the wider picture.
  • Pregnancy, or trying to conceive. The ADA report says more research is needed before very low-carb plans can be recommended in pregnancy. In a US study of 1,740 mothers of babies with neural tube defects and 9,545 control mothers, women with restricted carbohydrate intake before conception got less than half as much folic acid from food and were about 30% more likely to have an affected pregnancy (Desrosiers et al., 2018). It’s an observational finding, but the authors’ concern was that avoiding carbohydrates means eating fewer folic acid-fortified foods, and both halves of this diet do that.
  • Kidney disease or kidney stones. The ADA report flags chronic kidney disease as a group needing more research, and the 2026 review lists advanced kidney or liver disease as relative contraindications. A meta-analysis of 36 studies with 2,795 people on ketogenic diets estimated a kidney stone incidence of 5.9% over an average of 3.7 years (Acharya et al., 2021).
  • Other situations the 2026 review flags for caution: blood pressure medication, gallbladder disease, familial hypercholesterolemia, acute pancreatitis, being underweight, and breastfeeding. The ADA report adds disordered eating.

Expect a rough first stretch too. Harvard lists hunger, fatigue, low mood, irritability, constipation, headaches and brain fog as possible symptoms that may last days to weeks. A 2025 scoping review found a physiological rationale for replacing electrolytes during this phase but no clinical studies testing it (Skartun et al., 2025). Our paleo flu guide walks through the sodium side. Severe or lasting symptoms are a reason to call your doctor, not to push through.

Common mistakes when you combine paleo and keto

Making coconut oil and bacon the default fats. They’re paleo and carb-free, but the sample day shows what they do to saturated fat. Use olive oil, avocado oil, avocado, nuts and oily fish for most of your fat.

Cutting vegetables to save carbs. Vegetables used 24 g of the sample day’s 45 g and delivered most of its fiber, potassium and magnesium. Cut the berries or the onion first.

Letting paleo “treats” back in. Honey, dates and sweet potato are paleo, and any one of them can end a keto day.

Doubling the meat. Harvard notes that keto keeps protein moderate because too much protein can prevent ketosis. On 2,000 calories, 10-20% of calories is 50 to 100 g of protein.

Ignoring calcium. Neither parent diet’s rules give you dairy here. Plan bone-in canned fish and greens on purpose.

Treating it as permanent. In the BMJ analysis above, the six-month benefits of low-carb diets had diminished by 12 months, and adherence explained much of the difference between stricter and looser plans. Decide in advance how you’ll move to standard paleo if this stops working for you.

Frequently asked questions about the paleo keto diet

What can you eat on a paleo keto diet?

Meat, poultry, fish, shellfish, eggs, leafy greens and other non-starchy vegetables, avocado, olives, nuts, seeds, olive oil, avocado oil, coconut oil and animal fats, plus small portions of berries. Grains, legumes, dairy, sugar and sweeteners are out under paleo’s rules. Sweet potatoes, bananas, most fruit and honey are out because of keto’s carb limit.

Is paleo keto healthier than regular keto?

Nobody has tested that directly. A PubMed search on October 8, 2026 found no controlled trial of the combination. Paleo keto does remove processed keto snacks and can be built around olive oil, nuts and fish, which Harvard’s review suggests for lowering saturated fat. It also removes dairy, so calcium needs planning.

Can you have butter or ghee on a paleo keto diet?

Butter is dairy, so strict paleo excludes it. Ghee is clarified butter and many paleo plans allow it as a gray-area fat. If you use it, count it: USDA data shows a tablespoon of ghee has 7.7 g of saturated fat, about four times the 1.9 g in a tablespoon of olive oil.

How many carbs a day is paleo keto?

Usually 20 to 50 g. Harvard’s review puts ketogenic diets under 50 g of total carbohydrate and as low as 20 g, or 5-10% of calories. On 2,000 calories that percentage works out to 25 to 50 g. The sample day in this guide totals 45 g of carbohydrate, of which 22 g is fiber.

How much protein should you eat on a paleo keto diet?

A moderate amount. Harvard’s review gives 10-20% of calories from protein for ketogenic diets, which is 50 to 100 g on 2,000 calories, and notes that too much protein can prevent ketosis. The sample day in this guide has 97 g from three eggs, a can of sardines and 6 oz of chicken thigh.

Is a paleo keto diet safe long term?

That isn’t known. There are no long-term trials of the combination, and Harvard’s review lists kidney stones, osteoporosis and raised uric acid as suggested risks of long-term ketogenic diets. If you plan to follow it for more than a few months, ask your doctor about checking blood lipids and other markers along the way.

Your next step: price your usual day before you change it

Before you buy anything, write down what you ate yesterday and price it in carbs using the food table above. Most paleo eaters find that two or three foods, usually fruit, sweet potato and honey, account for most of the gap between where they are and 50 g. Remove those, replace their calories with olive oil, avocado and nuts, and check your calcium. If a ceiling this low doesn’t suit you, the paleo diet comparisons hub covers the less restrictive options.

Consider this general nutrition reading, not a replacement for advice from your doctor or a registered dietitian. Talk to your doctor before starting a very low-carb diet if you take medication for diabetes or blood pressure, are pregnant or breastfeeding, or have kidney, liver, gallbladder or heart disease.

Research cited in this guide

Leave a Reply

Your email address will not be published. Required fields are marked *