The 5 Most Nutrient-Dense Vegetables Based on Science

Supermarket Vegetables

Vegetables of all colors are packed with vitamins, minerals, fiber, and phytonutrients. You can’t go wrong by adding more colorful produce to your plate. There are, however, vegetables with a higher nutrient content relative to their calories, making them exceptionally helpful for weight control and health.

Dr. Fuhrman, the developer of the nutritarian diet, came up with the idea of an ANDI (aggregate nutrient density index) to quantify the nutrient content of fruits and vegetables relative to their calories. Using the ANDI score, researchers undertook the time-consuming task of ranking 41 fruits and vegetables according to their nutrient density. Let’s look at which produce tops the list in terms of nutrient density per calorie, based on the ANDI score.

Watercress

Watercress (Nutrient Density Score 100%)

Watercress tops the list of nutrient-dense vegetables per calorie based on ANDI criteria. Watercress is a dark green, leafy vegetable that grows in cold, clear streams and rivers, and you can enjoy its peppery flavor raw or cooked. However, you’ll retain more of its vitamin C if you consume this leafy green raw. Watercress adds a kick to salads, wraps, and sandwiches. Along with vitamin C, watercress is rich in vitamin K, important for blood clotting and bone density, and beta-carotene, a precursor to vitamin A and an antioxidant and anti-inflammatory.

Even more intriguing are the antioxidants in watercress, including phenylethyl isothiocyanate (PEITC). One study found that antioxidants in watercress suppress damage to DNA, a cell’s genetic material. In the study, the results were most pronounced in smokers. Although the cancer-fighting capabilities of watercress are an area that needs more research, you can’t go wrong adding watercress to your plate.

Napa Cabbage

Chinese Cabbage (Nutrient Density Score 92%)

Chinese cabbage is also called Napa cabbage, and it’s a member of the Brassica family. This green, leafy veggie has long, pale green leaves with white ribs and a sweet flavor. Since it’s a cruciferous vegetable, like watercress and broccoli, it contains similar phytochemicals, some of which are being explored for potential anti-cancer benefits.

What you might not know about Chinese cabbage is it’s more nutrient dense than regular cabbage, offering more of certain vitamins such as vitamins C, K, and folate, a B-vitamin. Plus, it contains various antioxidants with anti-inflammatory activity, all for only 9 calories a cup.

To get the most vitamin C from Chinese cabbage, enjoy it raw in salads and sandwiches. If you prefer it cooked, add the chopped leaves or ribs to stir-fries with other Asian ingredients. Stir-fry recipes typically have a base of garlic and ginger, which work well with Chinese cabbage’s mild flavor. Add chicken, shrimp, or tofu for protein.

Swiss Chard

Swiss Chard (Nutrient Density Score 89%)

Swiss chard, also known as leaf beet, is a leafy green vegetable that belongs to the same family as beets. Its leaves have a mild flavor like spinach, but it has a slightly tougher texture that softens when you cook it. Swiss chard is a rich source of vitamin K, although it contains less vitamin C than the top two most nutrient-dense veggies, watercress, and Chinese cabbage, per calorie.

One downside is Swiss chard is high in oxalates. If you have a history of calcium oxalate kidney stones, it’s best to avoid Swiss chard since it can increase the amount of oxalates in your urine and boost the odds of kidney stones forming. Cooking Swiss chard reduces but doesn’t eliminate, oxalates.

Need a quick way to prepare it? Try sauteing Sauté Swiss chard in olive oil until just wilted (about 5 minutes). Season with salt and pepper to taste before serving.

Beet Greens

Beet Greens (Nutrient Density Score 87%)

Beet greens are the leaves of beets, colorful root vegetables that grow in the ground. Beet greens are like spinach in texture and taste but have a more intense flavor. You can enjoy these leafy greens raw in salads or cooked like spinach, Swiss chard, or other leafy greens. But like Swiss chard, they’re high in oxalates, so it’s best to cook them to reduce their oxalate content.

Enjoy beet greens cooked or steamed, and tossed with olive oil, lemon juice, or vinegar. You can also sauté them with garlic and onions for a flavorful side dish to add to your dinner plate.

Why are beet greens so nutrient-dense? With each bite, you get a healthy dose of vitamins A and C, but they also contain respectable quantities of minerals such as iron and zinc.

Bowl of Spinach

Spinach (Nutrient Density Score 86%)

Who isn’t familiar with the green, leafy vegetable known as spinach? It’s widely available and packed with nutrients such as vitamins A, C, and K, and like all leafy greens, an excellent source of fiber.

Like Swiss chard, beet greens, and spinach, spinach is also high in oxalates. If you have a history of calcium oxalate kidney stones, it’s safest to substitute a lower-oxalate green such as watercress or kale for spinach.

Spinach also contains compounds called thylakoids that have appetite-suppressing benefits. Plus, spinach is a rich source of lutein and zeaxanthin, carotenoids which may help prevent age-related macular degeneration (AMD) and cataracts, common causes of visual decline.

Leafy Greens Dominate the List

You may have noticed a trend. Leafy greens top the list of nutrient-dense foods per calorie. Another benefit of leafy greens is they’re high in natural nitrates, compounds that increase nitric oxide, a gas that helps open blood vessels. This enhances endothelial function, healthy blood vessel function that lowers blood pressure, and the risk of blood clots, another reason to add greens to your plate.

The Bottom Line

Leafy greens are nutrient-rich and lower in calories and top the list in terms of ANDI scores. Still, it’s smart to enjoy a wide array of non-starchy vegetables and fruits for optimal health. Almost all contain substantial quantities of potassium, a mineral and electrolyte that helps lower blood pressure. So, fill your grocery cart with fruits and vegetables in all colors of the rainbow, but don’t forget to add these five veggies with the highest ANDI scores.

References:

  1. “Watercress supplementation in diet reduces lymphocyte DNA damage and alters blood antioxidant status in healthy adults” by Chris IR Gill, Sumanto Haldar, Lindsay A Boyd, Richard Bennett, Joy Whiteford, Michelle Butler, Jenny R Pearson, Ian Bradbury and Ian R Rowland, 1 February 2007, The American Journal of Clinical Nutrition.
    DOI: 10.1093/ajcn/85.2.504
  2. “Consumption of thylakoid-rich spinach extract reduces hunger, increases satiety and reduces cravings for palatable food in overweight women” by Eva-Lena Stenblom, Emil Egecioglu, Mona Landin-Olsson and Charlotte Erlanson-Albertsson, 17 April 2015, Appetite.
    DOI: 10.1016/j.appet.2015.04.051
  3. “ANDI Food Scores: Rating the Nutrient Density of Foods.” 16 Mar. 2017, drfuhrman.com/blog/128/andi-food-scores-rating-the-nutrient-density-of-foods.
  4. “Joel Fuhrman Micronutrients Food List – HRF.” healthresearchfunding.org/joel-fuhrman-micronutrients-food-list/.
  5. “Acute Effects of a Spinach Extract Rich in Thylakoids on Satiety: A Randomized Controlled Crossover Trial” by Candida J. Rebello, MS, RD, Jessica Chu, BS, Robbie Beyl, PhD, Dan Edwall, PhD, Charlotte Erlanson-Albertsson, PhD and Frank L. Greenway, MD, 1 June 2015, Journal of the American College of Nutrition.
    DOI: 10.1080/07315724.2014.1003999

7 Comments on "The 5 Most Nutrient-Dense Vegetables Based on Science"

  1. Great article. My 22yo son is a “bleeder” and I wonder if it could partly be attributed to a lack of Vit K. Does cooking the spinach also remove the oxalates? I’m definitely going to start growing watercress. Thanks

  2. Big bias toward greens. And, yes, it is an arbitrary bias. In this day and age, we can use methylation values to see what diets accelerate or slow aging, and you don’t want a bunch of redundant greens. If you are going to pick 5 vegetables, they should complement each other rather than copy each other. And you can’t be terrified to get a few calories from vegetables.
    Pumpkin~ #1 best source of alpha carotene (and alpha-carotene has the best DNA methylation effect)
    Raw Grape leaves~ #1 best source of beta-carotene (and beta-carotene is tied for the second the best DNA methylation effect)
    Butternut squash~ #1 best source of beta-cryptoxanthin (and beta-cryptoxanthin is tied for the second the best DNA methylation effect)
    Kale~ #1 best source of Lutein+Zeaxanthin (4th best DNA methylation effect)
    Tomato~ #1 best source of Lycopene, though thickened tomato based sauces have more. (Lycopene is 5th but not 5th overall, carbohydrates, dairy, fruits, exercise, and whole grains are as good or better.)

  3. Yes these 5 vegetables have very strong health benefits. Especially if they are grown in rich nutritional soil. I would buy from farmers market vegetables and Amish farmers over store bought vegetables because the odds are in your favor of having higher quality vegetables which is essential for optimal health there are several companies that put top quality vegetables and fruits in there bio available health products one is called eniva health otherwise co-op and farmers market are excellent sources to get the best for you

  4. Vicki Callaway | September 4, 2022 at 4:16 am | Reply

    Great info I know some of this but need reminder. Mindful thinking

  5. This article had me until I started seeing the term fruit. I agree with the vegetables.

  6. Message also goes to Mindbreaker. 1. Kale is way overrated. Same goes for your rest of list, they are secondary and not even close of importance as my list. DNA is very important, however it is not everything that is important as the process of DNA evolution and alteration is very slow. In the meanwhile proper system defense and offence measures for maintenance and improvement of health and fight against illnesses and diseases must be taken. 2. Mediterranean diet still beats all other diets combined and has been around for thousands of years. The isle of Icaria in Greece has the highest age average per capita in the world (most 100+ citizens) 3. Amaranth Greens (Vlita), which have been cultivated and consumed in Greece for thousands of years is the most nutritious green still, although unfortunately not as popular due to west peoples ignorance and western diet, with insane medicinal and nutritional properties. 4. Put that along with Chicory which uneducated people still to this day think of it as a weed especially in Canada and USA (pathetic ) and any of the true Panacea family herbs like Greek Oregano (Origanum vulgare), Greek mountain tea, and other native Greek and Cretan herbs like Dittany (Origanum dictamnus), Sage / Salvia family (Salvia pomifera and Salvia fruticosa), Laudanum (Cistus creticus), Marjoram (Origanum microphyllum), Thyme (Coridothymus capitatus), Rosemary (Rosmarinus officinalis). Gram for gram they obliterate any of the store and western diet pushed kale, cabbage, Swiss chard, beets etc etc, with the only exception obviously being Spinach (Popeye can’t be wrong) which is one of the only 3 foods people can consume daily and intake sufficient nutrients along with most important element of iron and along with liver, liver being the most densely packed meat/organ on the planet, you can live off with that alone and still not require anything else or any supplements.

  7. I found the article and the comments to be interesting and enjoyed the different views. But I was disappointed that Vagelis found it necessary to us the disparaging phrase “Chicory which uneducated people still to this day think of it as a weed especially in Canada and USA (pathetic )” …. the effect of which was to discredit all that he/she had said. Educate rather than alienate, I would humbly suggest.

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