What beets actually do in your body
Beets are a root vegetable packed with compounds that your body uses in specific ways. The most talked-about substance in beets is betalain, a pigment that gives them their deep red or purple color. Your body breaks down betalains and uses them as antioxidants — molecules that can reduce damage from everyday wear on your cells.
Beets also contain nitrates, which your body converts into nitric oxide. Nitric oxide helps your blood vessels relax and widen, which means blood can flow more easily. This is why beets show up in conversations about heart health and exercise performance. The effect is real but modest — it is not a replacement for medication or exercise, but it is one of the reasons people add beets to their diet.
A medium beet (about 100 grams raw) contains roughly 9 grams of carbohydrates, 2 grams of fiber, and almost no fat. They are also a source of folate, manganese, and potassium, minerals your body needs for energy production and muscle function.
Key Takeaways
- Beets contain betalains and nitrates, compounds that your body uses to reduce cell damage and improve blood flow.
- The nitrate content in beets may help lower blood pressure slightly and improve oxygen delivery during exercise, though the effect is modest.
- Beets are high in fiber and folate, which support digestion and cell function.
- Beet juice concentrates the nutrients but also concentrates the natural sugars, so whole beets are usually the better choice for regular eating.
- People with kidney stones or gout should talk to their doctor before eating large amounts of beets, because beets contain oxalates.
How beets may affect blood pressure and circulation
Several studies have found that people who drink beet juice or eat beets show small drops in blood pressure within hours. The effect comes from the nitrates converting to nitric oxide, which relaxes blood vessel walls. The drop is usually in the range of 3 to 10 millimeters of mercury — noticeable on a blood pressure monitor but not dramatic.
This effect is temporary and depends on how much you eat or drink. A single glass of beet juice shows a measurable effect, but the effect fades after a few hours. If you eat beets regularly, the benefit may be more sustained, though research on long-term eating patterns is still limited. This is one reason beets are sometimes recommended as part of a broader approach to heart health, alongside exercise and other dietary changes — not as a standalone treatment.
The same nitrate-to-nitric oxide pathway is why athletes sometimes consume beet juice before endurance events. Studies show modest improvements in oxygen use during exercise, which can translate to slightly better performance in activities like running or cycling. The effect is small enough that it matters mainly to competitive athletes, not to people exercising for general fitness.
Beets and your digestive system
A medium beet contains about 2 grams of fiber, which is a meaningful amount for a single vegetable. Fiber moves through your digestive system largely unchanged and helps bulk up stool, making bowel movements easier and more regular. Eating beets regularly can contribute to the daily fiber intake your digestive system needs.
Beets also contain compounds called polyphenols, which feed the beneficial bacteria in your gut. A healthy gut microbiome — the community of bacteria living in your digestive tract — is linked to better digestion, stronger immunity, and even mood regulation. Beets are one of many foods that support this balance, though no single food is responsible for gut health.
One side effect worth knowing: beets can turn your stool and urine a dark red or purple color for a day or two after eating them. This is completely harmless and happens because your body is processing the betalain pigments. It surprises people the first time, but it is a normal sign that the beet compounds are moving through your system.
Beets and inflammation
Inflammation is your body's response to injury or irritation, and it is necessary in the short term. But chronic inflammation — inflammation that stays low-level for months or years — is linked to heart disease, diabetes, and joint problems. Betalains in beets have anti-inflammatory properties, meaning they can help calm this kind of ongoing inflammation.
The research here is still developing. Laboratory studies show that betalains reduce inflammatory markers in cells, but human studies are smaller and less conclusive. What we know is that eating a diet rich in colorful vegetables — including beets — is associated with lower inflammation overall. Beets are one part of that picture, not a cure on their own.
How to eat beets to get the most from them
Raw beets retain all their nutrients, but they are tough to chew and digest. Roasting, boiling, or steaming beets softens them and makes them easier to eat. Cooking does reduce some heat-sensitive vitamins, but the betalains and nitrates survive cooking well. A roasted beet is a practical choice that keeps most of the benefit.
Beet juice is popular because it concentrates the nutrients into a small volume — you get a lot of betalains and nitrates in one glass. The downside is that juice also concentrates the natural sugars without the fiber that whole beets contain. If you drink beet juice, a small glass (4 to 8 ounces) is a reasonable amount, and eating whole beets is usually a better choice for regular consumption.
Beet greens — the leafy tops — are also edible and contain different nutrients than the root. They are high in calcium and vitamins A and K. If you buy beets with greens attached, you can sauté or steam the greens separately and eat them alongside the root.
Who should be cautious with beets
Beets are safe for most people, but a few groups should be aware of potential issues. Beets contain oxalates, compounds that can bind to calcium in your digestive system. If you have a history of kidney stones, especially calcium oxalate stones, eating large amounts of beets regularly may increase your risk. Talking to your doctor about portion size is a good idea if this applies to you.
People with gout — a type of arthritis triggered by uric acid buildup — should also check with their doctor. Beets contain purines, which your body breaks down into uric acid. For most people this is not a problem, but for someone managing gout, it may matter. A doctor or dietitian can tell you whether beets fit into your specific situation.
If you take blood pressure medication, eating beets regularly is not a reason to stop your medication, but it is worth mentioning to your doctor. They can monitor your blood pressure and adjust your dose if needed, since beets may have a small additive effect.
Beets compared to other vegetables
Beets are nutrient-dense, but they are not uniquely powerful. Other red and purple vegetables — like red cabbage, red peppers, and blueberries — also contain betalains and antioxidants. Leafy greens like spinach and kale contain nitrates too. The real benefit comes from eating a variety of colorful vegetables regularly, not from choosing one "superfood."
What makes beets stand out is their taste and versatility. They are sweet enough to appeal to people who find other vegetables bland, and they work in salads, roasted as a side dish, blended into smoothies, or pickled. If beets are a vegetable you actually enjoy eating, that consistency matters more than any single nutrient they contain.
Frequently Asked Questions
Can beets lower my blood pressure enough to replace my medication?
No. Beets may lower blood pressure by a few points, but that is not enough to replace medication. If you take blood pressure medication, keep taking it and mention beets to your doctor. They can monitor your readings and adjust your dose if needed, but beets are a supplement to treatment, not a substitute.
Is beet juice better than eating whole beets?
Whole beets are usually the better choice. Juice concentrates the natural sugars without the fiber that helps your digestive system process them. If you drink beet juice, keep portions small — 4 to 8 ounces — and eat whole beets more often.
Why did my urine turn red after eating beets?
That is normal and harmless. Your body is processing the betalain pigments from the beets, and they pass through your system largely unchanged. The color fades after a day or two. If this surprises you, it is a sign the beets are moving through your body as expected.
Are pickled beets as healthy as fresh beets?
Pickled beets retain most of their betalains and nitrates, so they still offer nutritional value. The main difference is added sodium from the pickling brine. If you watch your salt intake, rinse pickled beets before eating or choose fresh beets more often.
Can I eat beets every day?
Yes, for most people. One beet a day or a few servings a week is a normal amount. If you have kidney stones, gout, or take blood pressure medication, check with your doctor about what amount makes sense for your situation.