Canned beets are a genuinely nutritious food, retaining most of the minerals, fiber, and distinctive plant pigments that make fresh beets worth eating. They lose some compounds during processing, and the added sodium in many brands is a real drawback, but neither of those caveats cancels out their value. For people who find fresh beets inconvenient to prepare, the canned version is a practical and healthy substitute that deserves a spot in the pantry.
What You Actually Get From a Can of Beets
Beets in any form are a solid source of potassium, manganese, and folate, along with a decent amount of fiber. A half-cup serving of canned sliced beets provides roughly 40 calories and meaningful amounts of these micronutrients, though exact values depend on the brand and packing liquid. Iron content is modest but still present, and the natural sugars in beets contribute a small amount of readily available energy.
What sets beets apart from other root vegetables is their pigment chemistry. The deep red-purple color comes from a family of compounds called betalains, which function as antioxidants in your body. Canned beets hold onto a significant share of these pigments. Research on how processing affects betalain content shows that while boiling and high-heat treatments reduce betalain concentration, antioxidant activity can actually increase with certain cooking methods, possibly because heat breaks down cell walls and makes other beneficial compounds more accessible.1Food Research International. Impact of processing of red beet on betalain content and antioxidant activity The canning process involves sustained heat, so you lose some betalains, but you don’t lose the antioxidant story entirely.
How Canning Changes the Nutrient Picture
The honest answer is that canning does reduce some nutrients, and the degree varies depending on which nutrient you care about. The two main mechanisms that matter here are leaching (nutrients dissolving into the canning liquid) and heat-driven breakdown.
Folate is one of the more vulnerable nutrients. Research on folate in fruits and vegetables identifies two main loss pathways during processing: folate leaches into the surrounding liquid, and it breaks down through oxidation during heat treatment.2PubMed. Folates in Fruits and Vegetables: Contents, Processing, and Stability This means the brine or packing water in the can absorbs some folate that used to be in the beet itself. If you drain and toss that liquid, you lose that portion. This doesn’t mean canned beets are folate-free, but if folate is your priority, fresh or minimally cooked beets will deliver more.
Nitrate, one of the compounds responsible for beet’s cardiovascular reputation, also takes a hit during commercial canning. A study comparing home-processed and commercially processed beets found that commercially canned beets had significantly lower nitrate content than home-processed versions, a difference the researchers attributed to the differences in processing methods.3PubMed. Nitrate-nitrite levels in commercially processed and home processed beets and spinach Among commercially processed varieties, pickled and Harvard beets (the sweet kind) showed even less nitrate, largely because the added sugar diluted the concentration on a dry-weight basis. So if you are eating canned beets specifically for their nitrate content, plain canned beets are a better pick than sweetened or pickled versions, though none match fresh beets or concentrated beet juice.
Minerals like potassium, manganese, and iron are relatively heat-stable, so they survive canning well. Fiber is also unaffected by the canning process. This is why canned beets still qualify as nutritious despite the losses in other areas: the minerals and fiber that form the backbone of their nutritional value come through largely intact.
The Blood Pressure Connection
Much of the health buzz around beets centers on their nitrate content and its effect on blood pressure. When you eat nitrate-rich foods, bacteria on your tongue convert the nitrate into nitrite, which your body then turns into nitric oxide. Nitric oxide relaxes and widens blood vessels, lowering blood pressure. This is well-established physiology, and beets are one of the richest dietary sources of nitrate.
A systematic review and meta-analysis of studies on beetroot juice in people with high blood pressure found that supplementation significantly lowered systolic blood pressure by about 5 mmHg compared to a control group.4PubMed Central. Nitrate Derived From Beetroot Juice Lowers Blood Pressure in Patients With Arterial Hypertension: A Systematic Review and Meta-Analysis That might not sound dramatic, but a 5-point drop in systolic pressure is clinically meaningful over time when it comes to cardiovascular risk. The effect on diastolic pressure was smaller and didn’t reach statistical significance in that analysis.
The caveat for canned beets specifically is that most of this research uses concentrated beetroot juice, which delivers far more nitrate per serving than a few slices of canned beet. Canned beets still contain nitrate, just less than fresh beets and much less than a shot of beet juice. You’re getting some of the blood pressure benefit, but it would be misleading to assume a half-cup of canned beets will replicate the effects seen in studies using juice concentrates. Think of canned beets as a contributor to your overall nitrate intake rather than a standalone therapy.
One often-overlooked factor in this process: the oral bacteria that kick off the nitrate-to-nitrite conversion can be disrupted by certain mouthwashes. Research has shown that chlorhexidine mouthwash significantly impaired the activity of nitrate-reducing bacteria in the mouth.5PubMed Central. The comparative effect of propolis and chlorhexidine mouthwash on oral nitrite-producing bacteria and blood pressure regulation If you’re eating beets for cardiovascular reasons and also using antibacterial mouthwash regularly, you may be undermining the mechanism. It’s an odd intersection of oral health and diet that rarely comes up in nutrition discussions.
Betalains and Inflammation
The red pigments in beets aren’t just cosmetic. Betalains have been studied for a range of potential health effects beyond basic antioxidant activity. A narrative review of the pharmacological research on betalains found evidence for antioxidant, anti-inflammatory, blood-pressure-lowering, and lipid-lowering properties, along with some preliminary evidence for liver-protective, neuroprotective, and anticancer effects in laboratory and animal studies.6PubMed Central. Betalains: A Narrative Review on Pharmacological Mechanisms Supporting the Nutraceutical Potential Towards Health Benefits
The anti-inflammatory research is the most fleshed out. One specific betalain, indicaxanthin, has been shown to modulate the production of prostaglandins in immune cells. In laboratory studies using activated macrophages, indicaxanthin reduced levels of a pro-inflammatory prostaglandin (PGE2) while boosting an anti-inflammatory one (PGD2), and it appeared to regulate the enzyme COX-2, which is a major player in the inflammatory response.7Human Nutrition & Metabolism. Anti-inflammatory activity of betalains: A comprehensive review This is the same enzyme that drugs like ibuprofen target, though beet pigments are far gentler in their effect.
It’s worth being realistic about what these findings mean for you. Most of this research is from cell cultures and animal models, not large human trials. The therapeutic potential of betalains is promising enough to be taken seriously, but “beets fight inflammation” as a blanket statement overstates the current evidence.8PubMed Central. Therapeutic Application of Betalains: A Review Eating canned beets regularly is a reasonable way to get betalain exposure, and it’s plausible that this contributes to an anti-inflammatory dietary pattern. But you shouldn’t treat beets as a substitute for actual medical treatment of any inflammatory condition.
Exercise Performance and Beet Nitrate
Athletes and gym-goers have taken notice of beets for a different reason. A systematic review of beetroot juice supplementation and endurance exercise found that it improved exercise performance, reduced oxygen consumption during exercise, and enhanced muscle oxygenation.9International Journal for Research in Applied Science and Engineering Technology. Beetroot Juice Supplementation for Enhanced Endurance Exercise Performance: A Systematic Review The proposed mechanism ties back to nitric oxide improving blood flow to working muscles, making them more efficient at using oxygen.
Again, this research almost exclusively involves concentrated beetroot juice consumed in doses that deliver a lot more nitrate than you’d get from a can of sliced beets. The typical study protocol uses somewhere around 300-500 mL of juice, consumed a few hours before exercise. A side of canned beets with dinner the night before your run isn’t equivalent. If athletic performance is your main goal, concentrated beet juice or nitrate-rich beet powder supplements are a more practical delivery method. Canned beets contribute to your overall nitrate pool, but they won’t be the performance hack that headlines suggest unless you’re eating very large quantities.
Dealing With the Sodium
The biggest legitimate knock against canned beets is the sodium. Commercial canning uses salt as a preservative and flavor enhancer, and a typical serving of canned beets can contain 200-300 mg of sodium or more, depending on the brand. For someone watching sodium intake due to high blood pressure or kidney concerns, that’s not trivial.
The good news is that you can substantially reduce the sodium content with a simple step. Research on canned vegetables found that draining the canning liquid and replacing it with fresh water before heating cut the sodium content by about a third.10PubMed. Effect of water rinsing on sodium content of selected foods A quick rinse under running water after draining adds some additional reduction. This won’t bring canned beets down to the sodium level of fresh beets, but it makes a meaningful dent.
You can also look for “no salt added” varieties, which are increasingly common in grocery stores. These use the same canning process but skip the added sodium chloride, relying instead on the beets’ own natural flavor. The nutrient profile is otherwise identical, so if sodium is a concern, no-salt-added canned beets are the most straightforward solution.
Pickled Beets Are a Different Nutritional Product
People often lump pickled beets and plain canned beets together, but they differ in a few meaningful ways. Pickled beets sit in a vinegar-based brine, often with added sugar. As mentioned earlier, the sugar and different brine composition dilute the nitrate content compared to plain canned beets.3PubMed. Nitrate-nitrite levels in commercially processed and home processed beets and spinach So if you are eating beets for their cardiovascular benefits, plain canned beets are the better option.
On the other hand, pickled beets deliver acetic acid from the vinegar, which has its own potential benefits. A study in people with type 2 diabetes found that vinegar consumption increased muscle glucose uptake compared to placebo, and also lowered blood glucose, insulin, and triglyceride levels after a meal.11PubMed Central. Vinegar Consumption Increases Insulin-Stimulated Glucose Uptake by the Forearm Muscle in Humans with Type 2 Diabetes That study used vinegar in a controlled dose rather than pickled beets specifically, so the translation isn’t one-to-one. Still, the presence of vinegar in pickled beets may offer a modest metabolic bonus, even as the nitrate content drops.
The tradeoff is real but not dramatic. Pickled beets have less nitrate and more sugar. They may have a small metabolic upside from the vinegar. Plain canned beets preserve more of the nitrate and skip the added sugar. Neither version is bad for you; they just have slightly different strengths.
Can Linings and BPA Exposure
Some people avoid canned foods entirely because of concerns about bisphenol A (BPA) in can linings. This isn’t unfounded. BPA has been used in the epoxy resin that lines many food cans, and it can migrate into the food. A review of BPA release from food and beverage containers found that dietary exposure is the primary route by which BPA enters the human body, and that factors like high temperature, acidic pH, and prolonged contact time increase the amount of BPA that leaches into food.12PubMed Central. Bisphenol A release from food and beverage containers – A review
Beets are mildly acidic, which puts them in the category of foods that could theoretically draw out more BPA than neutral-pH foods. However, many manufacturers have transitioned to BPA-free can linings in recent years, particularly for products marketed as natural or organic. If BPA exposure concerns you, look for cans labeled BPA-free. Some brands also sell beets in glass jars or aseptic cartons, which sidestep the issue entirely. The practical risk from occasional consumption of canned beets is low for most people, but if you eat canned foods frequently across multiple meals, the cumulative exposure is worth thinking about.
Beeturia Is Harmless
If you eat canned beets and then notice red or pink urine later that day, don’t panic. This phenomenon, called beeturia, happens to roughly 10-14% of people and is completely benign. The betalain pigments pass through your digestive system and are excreted by the kidneys. Whether you experience beeturia depends on your stomach acid levels, the speed of your digestion, and genetic factors in how you absorb and break down betalains.
The main reason this is worth mentioning is that beeturia occasionally sends people to the emergency room convinced they are passing blood. It can also affect the color of stool. If you’ve recently eaten beets and notice a color change, give it 24-48 hours before assuming anything is wrong. Once the pigments clear your system, everything returns to normal.
Who Should Think Twice About Canned Beets
Beets, canned or otherwise, are high in oxalates. Oxalates bind to calcium and can contribute to kidney stone formation in susceptible people. If you have a history of calcium oxalate kidney stones, your doctor may have told you to limit high-oxalate foods, and beets are near the top of that list. Canning doesn’t meaningfully reduce the oxalate content, so this applies to canned beets just as much as fresh ones.
People on blood-thinning medications like warfarin sometimes worry about beets because of their vitamin K content, but beets are actually quite low in vitamin K compared to leafy greens. A half-cup of canned beets provides a minimal amount. This is more of a concern with beet greens (the leafy tops), which are rich in vitamin K but aren’t part of what you get in a can.
If you have diabetes, be aware that beets are among the higher-sugar root vegetables. Canned beets in sweetened sauces or Harvard-style beet preparations add even more sugar on top of the beet’s natural sugar content. Plain canned beets have a moderate glycemic impact, but combining them with added sugars changes that equation. Check the label and choose plain varieties packed in water if blood sugar management is a priority for you.
Getting the Most Out of Canned Beets
A few practical tips can help you maximize the nutritional return from your canned beets. First, drain and rinse to cut sodium, but consider saving the brine if you’re using no-salt-added beets. That liquid contains some leached nutrients, including folate and betalains, and can be added to soups, smoothies, or rice cooking water rather than poured down the drain. Second, pair beets with a source of fat. Betalains and some of the other beneficial compounds in beets are more readily absorbed when consumed alongside dietary fat, so tossing canned beets into a salad with olive oil or avocado is a better strategy than eating them plain.
Temperature matters too. If you’re heating canned beets, keep the heat moderate. They’re already cooked, so you only need to warm them through. Extended high heat will break down more of the remaining betalains for no real benefit, since the texture is already soft from canning. Adding a splash of acid, like lemon juice or vinegar, to heated beets can help stabilize the remaining pigments and brighten the color, which is also a rough proxy for preserving some of the antioxidant value.
Canned beets work well as a salad ingredient, a side dish, a blender addition to smoothies, or even blended into hummus for color and earthy sweetness. Their convenience is their main advantage over fresh beets, which require roasting or boiling for 45 minutes or more. For people who would otherwise skip beets entirely because of the prep time, canned beets are a worthwhile nutritional compromise rather than a downgrade to avoid.