One cup of cooked beets per day (or half a cup of beetroot juice) is the general recommendation for getting meaningful health benefits. That’s roughly two medium-sized beets. This amount provides enough naturally occurring nitrates to support blood pressure and cardiovascular health without overdoing it on oxalates or calories.
What One Cup of Beets Gives You
A single medium beet weighs about 82 grams and contains around 35 calories and 2 grams of fiber. So a one-cup serving, which is roughly two beets, comes in at about 70 calories with 4 grams of fiber. Beets are also a solid source of folate, manganese, and potassium. The real standout, though, is their nitrate content, which is among the highest of any vegetable.
How Beet Nitrates Work in Your Body
When you eat beets, bacteria on the back of your tongue convert the nitrates into a related compound. That compound then hits the acidic environment of your stomach and transforms into nitric oxide, a molecule that relaxes and widens blood vessels. This is why beets are linked to lower blood pressure and better blood flow. The process is entirely natural and uses the bacteria already living in your mouth, which is one reason antibacterial mouthwash can actually blunt the blood pressure benefits of beets.
In areas of your body where oxygen is low, like working muscles during exercise, this conversion ramps up even further. Your body essentially has a built-in system for turning dietary nitrate into a performance-boosting signal, and beets are one of the most efficient ways to feed it.
How Much for Exercise Performance
If you’re eating beets specifically to improve athletic performance, the dose matters more precisely. The Australian Institute of Sport recommends consuming 350 to 500 milligrams of nitrate about 2 to 3 hours before exercise. That translates to roughly 500 milliliters (about 2 cups) of beetroot juice, or a concentrated beetroot shot, which is more than the general health recommendation.
Another strategy is to consume that same dose daily for several days leading into a competition or hard training block. This loading approach may build up nitrate levels in your tissues over time. Most research on performance benefits has used beetroot juice or concentrated supplements rather than whole beets, simply because it’s easier to standardize the dose. But whole beets contain the same active compounds.
Roasting Beats Boiling
How you prepare beets changes how much benefit you get. Nitrates are water-soluble, so boiling peeled beets causes a significant amount to leach into the cooking water. Unless you’re drinking that water (in a soup, for example), those nitrates are going down the drain.
Roasting beets whole with their skins on is a better option. The skin acts as a barrier, trapping steam and nitrates inside the root. This method retains roughly 25% more of the beneficial compounds compared to boiling. Steaming is another good alternative. If you prefer raw beets, grating them into salads preserves the full nitrate content since nothing is lost to cooking liquid.
Oxalates and Kidney Stones
Beets are moderately high in oxalates, compounds that can contribute to calcium oxalate kidney stones in people who are prone to them. Beetroot juice contains about 60 to 70 milligrams of oxalate per 100 milliliters, which adds up quickly if you’re drinking large amounts. At 500 milliliters a day, you’d be taking in a substantial portion of your total daily oxalate load from juice alone.
If you’ve never had a kidney stone, eating one cup of beets a day is unlikely to cause problems. But if you have a history of calcium oxalate stones, you should be more cautious with both the amount and the form. Pairing beets with calcium-rich foods (like cheese or yogurt) can help, because calcium binds to oxalate in the gut and reduces how much your body absorbs.
Beeturia and Other Harmless Side Effects
About 10 to 14 percent of people experience beeturia, a harmless condition where urine turns pink or red after eating beets. The color comes from betalain, a red pigment in beets that passes through some people’s digestive systems without fully breaking down. Your stool can also take on a reddish hue. This is completely benign, but it catches people off guard, especially when it looks like blood. If you’ve eaten beets in the last day or two and notice discoloration, that’s almost certainly the cause.
Who Should Be Cautious With Large Amounts
While no well-documented drug interactions exist for beets, the blood pressure-lowering effect is real. If you’re already taking medication to lower your blood pressure and you start drinking large quantities of beetroot juice, the combined effect could drop your pressure too low. This is more of a concern with concentrated juice or supplements than with a cup of roasted beets at dinner.
For most people, one cup of cooked beets or half a cup of juice daily is a safe, practical target. You can eat them every day without concern, and the cardiovascular and performance benefits appear to be dose-dependent up to a point. Going well beyond that amount doesn’t seem to add proportional benefits and starts to increase your oxalate intake unnecessarily.