Health Benefits of Beets: What the Research Shows

Beets have moved well beyond their role as a pickled side dish. Research over the past two decades has given nutritionists and scientists genuine reasons to look more closely at this root vegetable — particularly at a few compounds found in high concentrations that aren't common in many other foods.

What Makes Beets Nutritionally Distinctive

Beets (Beta vulgaris) are a good source of folate, manganese, potassium, and vitamin C. They also contain meaningful amounts of dietary fiber and are relatively low in calories for the volume they provide.

What sets beets apart nutritionally, though, is a combination of three less commonly discussed compounds:

• Nitrates — naturally occurring compounds that the body converts into nitric oxide
• Betalains — the pigments responsible for the deep red-purple color (and present in yellow/golden beets as well), which function as antioxidants and anti-inflammatory agents
• Betaine — a compound involved in homocysteine metabolism and liver function

These aren't exclusive to beets, but beets contain them in concentrations that make the vegetable a frequent subject of nutrition research.

What Research Generally Shows About Beets and Blood Pressure 🫀

The most studied area of beet nutrition is its relationship with blood pressure and cardiovascular function, specifically through dietary nitrates.

When you eat beets, bacteria in the mouth convert nitrates to nitrites, which are then converted in the body to nitric oxide — a molecule that helps relax and dilate blood vessels. Multiple clinical trials have found that consuming beet juice or whole beets can produce measurable reductions in blood pressure, particularly systolic pressure (the top number), for several hours after consumption.

A frequently cited area of research involves beet juice and athletic performance — specifically whether nitric oxide production improves oxygen efficiency in muscles. Several controlled studies have found modest improvements in endurance performance and time to exhaustion, though results vary across fitness levels, with some evidence suggesting the effect is more pronounced in recreational athletes than in elite competitors.

Important context: These studies often use concentrated beet juice at doses that can be difficult to replicate through whole food alone. The magnitude of the effect seen in studies doesn't translate uniformly to all individuals.

Betalains: Antioxidant and Anti-Inflammatory Properties

Betalains are water-soluble pigments that research classifies as antioxidants — compounds that neutralize free radicals and may reduce oxidative stress in cells. Laboratory and animal studies show betalains have notable anti-inflammatory activity, though well-designed human clinical trials are more limited in number.

The research on betalains is still developing. Most of what we understand comes from in vitro (cell-based) and animal studies, which establish plausible biological mechanisms but don't confirm the same effects occur in humans at the quantities consumed through ordinary diet. Human trials are fewer and often smaller in scale.

Folate and Its Role in the Body

One cup of cooked beets provides roughly 34% of the Daily Value for folate (vitamin B9) — a nutrient critical for DNA synthesis, cell division, and the formation of red blood cells. Folate is especially important during early pregnancy, where adequate intake is strongly linked to reduced risk of certain neural tube defects. This is one of the better-established findings in nutrition science.

For the general population, folate from food sources like beets is considered well-utilized, though absorption can vary based on gut health, cooking method, and interactions with certain medications.

Key Nutrients at a Glance

Values are approximate and vary by preparation method.

Factors That Shape How Beets Affect Different People

The same serving of beets can produce meaningfully different outcomes depending on several variables:

Nitrate conversion depends partly on oral bacteria. People who use antibacterial mouthwash regularly may significantly reduce nitrate-to-nitrite conversion, which can blunt any blood pressure or performance-related effect.

Kidney health is relevant because beets are high in oxalates — compounds that can contribute to calcium oxalate kidney stones in people already prone to them. For those with a history of kidney stones, beet intake is a factor worth discussing with a healthcare provider.

Blood pressure medications interact with nitrates in ways that may amplify blood-pressure-lowering effects. The combined effect in someone already on antihypertensive medication is something that warrants attention.

Beturia — the temporary pink or red discoloration of urine and stool — is harmless but affects roughly 10–15% of people and is more common in those with low stomach acid or iron deficiency. It can occasionally be mistaken for blood in urine.

Cooking method affects nutrient retention. Boiling beets causes some folate and betalain loss into the cooking water, while roasting or steaming tends to better preserve water-soluble compounds. Raw beets retain the most nitrates. 🥗

Where Whole Beets and Beet Supplements Differ

Beet root powder and concentrated beet juice supplements are marketed largely for nitrate delivery. The nitrate content in these products varies widely by brand, and supplements aren't subject to the same standardization requirements as pharmaceuticals. Whole beets come with fiber, additional micronutrients, and a slower absorption profile — factors that may meaningfully change how the body responds.

What the Research Doesn't Yet Confirm

Interest in beets for cognitive function, liver support, and inflammation-related conditions is growing, but most evidence in these areas is early-stage — preliminary studies, animal models, or small human trials. These are areas worth watching rather than conclusions to act on.

What's clear is that beets are a nutritionally dense vegetable with several compounds that have demonstrated biological activity. What's less clear — and what no general overview can determine — is how those compounds interact with your specific diet, health history, medication use, and physiology.