The Nutritarian diet: eat your greens, then eat more greens. Not wrong, just a lot.
A doctor's formula, six magic letters and a pile of kale. The core idea is sound. The proof is thin, the rules are strict, and the man behind it also runs the shop.
The short version
- What it is
- Mostly plants, picked for the most nutrients per calorie. Little or no meat, dairy, oil, salt or sugar.
- Good for
- Eating far more vegetables, beans and fruit than almost anyone does. Weight loss, if you can stick to it.
- Bad at
- Independent proof. Nearly every study has the founder's name on it. Also bad at dinner parties.
- Evidence
- Weak. The foods are well studied; the diet itself isn't.
- Our take
- Steal the plate, skip the dogma. Big salads and beans are great. Banning olive oil is not.
What the Nutritarian diet actually is
The Nutritarian diet is the brainchild of Joel Fuhrman, a US family doctor and author of Eat to Live. His whole system hangs on one line: H = N/C. Health equals nutrients divided by calories.1 Eat foods that pack lots of vitamins, minerals and plant compounds into few calories, and you win.
In practice that means a plate dominated by vegetables, especially leafy greens. Fuhrman's shorthand is G-BOMBS: greens, beans, onions, mushrooms, berries and seeds, ideally every day.2 His books ask for a big salad, a portion of beans, several pieces of fruit, a handful of raw nuts or seeds and a large serving of green vegetables daily. Off the menu: red and processed meat, dairy, fried food, soft drinks, sugar, all sweeteners, white flour and oil.3
The rules on animal food have shifted between books, from a small weekly allowance to almost none. So in practice it sits close to vegan, and next door to whole-food plant-based eating. The difference is the obsession with nutrient scores. Fuhrman built his own ranking, called ANDI, which puts kale near the top and meat near zero.3
How it works in your body
No secret mechanism here. Vegetables, beans and fruit are bulky, full of fibre and water, and low in calories. Fill your plate with them and you physically can't fit in as much of the dense stuff. It's the same trick behind Volumetrics, with stricter rules.
Fuhrman adds a twist: he says that the shaky, irritable hunger most people feel between meals is "toxic hunger", a kind of withdrawal from junk food, and that it fades once you eat this way. In his own survey of 768 followers, most said their hunger felt different and less unpleasant after switching.4 That's a questionnaire of fans, not a trial. The idea is interesting. It isn't proven.
What you eat, what you don't
Eat
- Leafy greens: kale, spinach, rocket, kai lan, Chinese cabbage
- Broccoli, cauliflower, cabbage, Brussels sprouts
- Beans, lentils, chickpeas, tofu, tempeh
- Onions, garlic, leeks, mushrooms
- Berries and other whole fruit
- Raw nuts and seeds: walnuts, flax, chia, sesame
- Some whole grains and starchy vegetables, like oats and sweet potato
Forget it
- Red and processed meat, dairy
- Oil of every kind, even olive oil
- Added salt and sugar, all sweeteners
- White bread, white pasta, white rice
- Fried food, crisps, soft drinks
- Most packaged and processed food
Alcohol on the Nutritarian diet
Least bad, now and then
- One glass of dry red or white wine with dinner
- A G'spritzter: dry wine topped up with soda water
- Gin, vodka or whisky with soda water and lime
Out
- Beer, cider, sweet wine, liqueurs
- Cocktails and anything mixed with juice, cola or tonic
- "Zero" mixers: sweeteners are on our never list
50 Club: one small glass of dry red with a meal, never on an empty stomach.
By Fuhrman's own maths, alcohol is a terrible deal: calories and no nutrients worth mentioning. Health bodies agree it's no health food. The WHO's European office says no level of drinking is safe, and that alcohol causes at least seven cancers.11 All the details are in our alcohol guide.
What the Nutritarian diet is good for, with proof
More fruit and vegetables: proper proof
The foods at the heart of this diet are some of the best-studied in nutrition. A Harvard analysis of two big cohorts plus 26 other studies, almost 1.9 million people in all, found that about five portions of fruit and vegetables a day went with the lowest risk of dying over the study period. Compared with two portions, the risk was about 13% lower.8 Above five, the benefit flattened out. These are observational studies, so they show a link, not cause and effect. But a Nutritarian eats well beyond five portions on day one.
Weight loss, in Fuhrman's own patients
A review of the charts of 56 patients from a family practice found that those who came back after a year had lost about 14 kg on average, and the 19 still coming at two years about 24 kg.5 Blood pressure and cholesterol also fell. Sounds great. Now the fine print: no control group, only 19 of the 56 had two-year data, and Fuhrman is a co-author.
Cholesterol and blood pressure, per a survey
In an online survey of people following the diet, those who said they stuck to it closely reported large drops in LDL cholesterol and blood pressure.6 The authors themselves call it a report of cases and self-reported benefits. A small six-week workplace pilot with 35 employees also found lower weight and LDL cholesterol, again without a control group.7
The "slower ageing" headline
A 2024 study compared 48 women who had eaten the Nutritarian way for five years or more with 49 women on a standard American diet. The Nutritarian group scored lower on blood markers of inflammation and on a DNA-based "pace of ageing" clock.9 It's a snapshot comparison of self-selected groups, and the study comes from Fuhrman's own research foundation. Interesting, not proof that kale keeps you young.
The uncomfortable truth
"The Nutritarian diet is proven to reverse disease." It isn't. The diet as a package has never been tested in a proper randomised trial against, say, the Mediterranean diet.3 Almost all the published evidence comes from surveys, chart reviews and case reports with Fuhrman as an author. The individual foods are excellent. The claim that this exact rulebook beats every other healthy pattern is marketing.
"Olive oil is empty calories." Oil is calorie-dense, true. But olive oil is a backbone of the Mediterranean diet, one of the best-studied eating patterns there is. Ranking it below kale on a nutrient score doesn't make it bad for you.
One more thing worth knowing: Fuhrman's online store sells supplements, multivitamins, dressings, bars and powders to people following his diet.3 Nothing illegal about it. Just keep it in mind when the same person tells you what you're missing.
The risks
- Vitamin B12. With little or no animal food, B12 runs low. A review found deficiency is common in vegetarians and even more so in vegans, and recommends supplements.10 If you go fully plant-based, you need B12 from a supplement or fortified food. No debate.
- Bones. In a large UK study, vegans had a higher risk of fractures than meat eaters, with hip fractures more than twice as common.12 It's observational, but calcium, vitamin D and protein deserve attention when you cut dairy and meat.
- Too few calories. A plate this bulky and this low in fat makes it easy to under-eat. Great if you carry a lot of fat. Not great if you're already slim, older or training hard.
- Blood thinners. Lots of leafy greens means lots of vitamin K, which can change how warfarin works.13 Don't drop your greens. Tell your clinic before you change how many you eat.
- Wind. A daily pile of beans, cabbage and onions will be heard. Build up slowly.
- It's hard to keep up. No oil, no salt, no cheese, at a hawker centre or in a Wirtshaus? Good luck. Strict rules are why most people quit.
Allergies: watch the staples
The Nutritarian diet leans on nuts, seeds and soy. If you're allergic, swap them out, don't just drop them.
| Nutritarian staple | Allergen (EU list of 14)14 | Swap |
|---|---|---|
| Walnuts, almonds, cashews, nut dressings | Tree nuts | Pumpkin and sunflower seeds |
| Peanuts, peanut butter | Peanuts | Sunflower seed butter |
| Sesame seeds, tahini | Sesame | Pumpkin seeds, sunflower seed paste |
| Tofu, tempeh, edamame, soy milk | Soy | Lentils, chickpeas, beans |
| Oats, wholewheat, barley | Cereals containing gluten | Buckwheat, quinoa, brown rice, certified gluten-free oats |
| Celery and celeriac | Celery | Fennel, cucumber, other vegetables |
| Mustard greens, mustard dressings | Mustard | Other leafy greens, lemon and herbs |
Don't do the Nutritarian diet if you…
- have ever had an eating disorder
- are underweight, or losing weight without trying
- are pregnant, breastfeeding or under 18, unless a dietitian plans it with you
- have kidney disease
- take warfarin, and haven't spoken to your clinic first
Healthen me asks about all of these and gives you a different plan if any apply.
How we use the Nutritarian diet in your plan
We don't. It isn't part of our engine. The rulebook is too strict and the evidence for the package is too thin.
We do steal the good bits. Your plan piles on vegetables, beans, berries and seeds, and greens show up in almost every meal. Same idea as G-BOMBS, without the trademark feel.
Where we part ways: we keep olive oil, eggs and oily fish, because the evidence for them is strong, and your first meal after the fast is keto-friendly. Protein comes first at every meal. No added sugar, no sweeteners, no white bread: on that, Fuhrman and we agree completely.
This article is general information, not medical advice. If you have a medical condition or take medication, talk to your doctor before changing how you eat.
Sources
- Fuhrman J. Knowing a food's nutrient density is key to making good choices. DrFuhrman.com (author's own website). drfuhrman.com/blog/128/what-is-a-nutritarian
- Fuhrman J. G-BOMBS: The anti-cancer foods that should be in your diet right now. DrFuhrman.com (author's own website). drfuhrman.com/blog/62
- Hall H. Eat for Life: Joel Fuhrman's Nutritarian Diet. Science-Based Medicine, 4 January 2022. sciencebasedmedicine.org/eat-for-life-joel-fuhrmans-nutritarian-diet
- Fuhrman J, Sarter B, Glaser D, Acocella S. Changing perceptions of hunger on a high nutrient density diet. Nutrition Journal 2010;9:51. doi.org/10.1186/1475-2891-9-51
- Sarter B, Campbell TC, Fuhrman J. Effect of a high nutrient density diet on long-term weight loss: a retrospective chart review. Alternative Therapies in Health and Medicine 2008;14(3):48–53. pubmed.ncbi.nlm.nih.gov/18517106
- Fuhrman J, Singer M. Improved cardiovascular parameter with a nutrient-dense, plant-rich diet-style: a patient survey with illustrative cases. American Journal of Lifestyle Medicine 2017;11(3):264–273. doi.org/10.1177/1559827615611024
- Sutliffe JT et al. Nutrient-dense, plant-rich dietary intervention effective at reducing cardiovascular disease risk factors for worksites: a pilot study. Alternative Therapies in Health and Medicine 2016;22(5):32–36. pubmed.ncbi.nlm.nih.gov/27622958
- Wang DD et al. Fruit and vegetable intake and mortality: results from 2 prospective cohort studies of US men and women and a meta-analysis of 26 cohort studies. Circulation 2021;143(17):1642–1654. doi.org/10.1161/CIRCULATIONAHA.120.048996
- Ferreri DM et al. Slower pace of epigenetic aging and lower inflammatory indicators in females following a nutrient-dense, plant-rich diet than those in females following the standard American diet. Current Developments in Nutrition 2024;8(12):104497. doi.org/10.1016/j.cdnut.2024.104497
- Pawlak R, Parrott SJ, Raj S, Cullum-Dugan D, Lucus D. How prevalent is vitamin B12 deficiency among vegetarians? Nutrition Reviews 2013;71(2):110–117. doi.org/10.1111/nure.12001
- World Health Organization, Regional Office for Europe. No level of alcohol consumption is safe for our health. 4 January 2023; and Anderson BO et al. Health and cancer risks associated with low levels of alcohol consumption. Lancet Public Health 2023;8(1):e6–e7. who.int/europe/news/item/04-01-2023-no-level-of-alcohol-consumption-is-safe-for-our-health
- Tong TYN et al. Vegetarian and vegan diets and risks of total and site-specific fractures: results from the prospective EPIC-Oxford study. BMC Medicine 2020;18:353. doi.org/10.1186/s12916-020-01815-3
- NHS. Warfarin: medicine used to prevent and treat blood clots. nhs.uk/medicines/warfarin
- Regulation (EU) No 1169/2011 on food information to consumers, Annex II (the 14 allergens). eur-lex.europa.eu/eli/reg/2011/1169/oj