The most rigorous human evidence available says beets do not reliably lower cholesterol. A systematic review pooling data from multiple clinical trials found no significant change in total cholesterol, LDL, HDL, or triglycerides after beetroot consumption. That sounds like a closed case, but the reality is messier. Beets contain a cocktail of compounds that interact with cardiovascular health in ways that don’t always show up on a standard lipid panel, and a few smaller studies hint at effects the meta-analysis may have missed.
What the Pooled Human Evidence Actually Shows
The clearest answer comes from a systematic review and meta-analysis that combined results from controlled trials of beetroot consumption and its effect on blood lipids. Across the pooled data, beetroot had no statistically significant effect on total cholesterol, triglycerides, HDL, or LDL. Subgroup analyses looking at different health conditions, different forms of beetroot (juice, powder, raw), and different types of interventions also came up empty. The authors concluded that beetroot “cannot be categorized as an effective supplementation for adjustment of lipid profile.”1Current Problems in Cardiology. Effect of Beetroot Consumption on Serum Lipid Profile: A Systematic Review and Meta-Analysis
A separate randomized trial in people with type 2 diabetes echoed this. After adjusting for baseline values, concentrated beetroot juice produced no significant change in total cholesterol, LDL, HDL, triglycerides, or blood pressure compared to a control group.2PubMed Central. Effects of concentrated beetroot juice consumption on glycemic control, blood pressure, and lipid profile in type 2 diabetes patients: randomized clinical trial study If you’re hoping that adding a glass of beet juice to your daily routine will move your cholesterol numbers at your next blood draw, the evidence is not on your side.
Why the Animal Data Looks So Different
If the human trials are lukewarm, the animal research is practically enthusiastic. In rat models of metabolic syndrome, four weeks of beetroot juice reduced circulating lipids, shrank visceral fat deposits, and lowered fat accumulation in the liver.3PubMed Central. Hypolipidemic Effects of Beetroot Juice in SHR-CRP and HHTg Rat Models of Metabolic Syndrome: Analysis of Hepatic Proteome Another rat study found that beetroot extract and juice both significantly decreased cholesterol and triglycerides in animals with dyslipidemia, with the largest reductions seen when beetroot extract was combined with simvastatin, a common cholesterol-lowering drug.4Jurnal Gizi Indonesia (The Indonesian Journal of Nutrition). Beetroot (Beta vulgaris L.) reduces cholesterol and triglyceride in dyslipidemic male rats sprague–dawley model Even beet leaves have shown promise in mice, where dehydrated beet stalks and leaves improved cholesterol levels and reduced blood sugar on a high-fat diet.5PubMed Central. Beet Stalks and Leaves (Beta vulgaris L.) Protect Against High-Fat Diet-Induced Oxidative Damage in the Liver in Mice
The gap between animal and human results is common in nutrition research and doesn’t necessarily mean beets are useless. Lab animals eat controlled diets, live in controlled environments, and are often bred to develop specific metabolic problems. The doses of beetroot compounds relative to body weight tend to be much higher than what a person would get from eating beets at meals. Translating those effects to free-living humans who eat varied diets and have different genetic backgrounds is where things consistently fall apart.
Protecting LDL May Matter More Than Lowering It
Here’s where the beet story gets more interesting. Cholesterol levels tell you how much LDL is floating around in your blood. But a growing body of evidence suggests that what happens to those LDL particles matters too. When LDL gets oxidized, it becomes far more dangerous to artery walls. Oxidized LDL is a key driver of plaque buildup, and anything that shields LDL from oxidative damage could potentially slow atherosclerosis even without changing the numbers on your lab report.
Beets are rich in betalains, the pigments that give them their deep red-purple color. The most studied of these are betanin and indicaxanthin. Research has shown that betalains can physically incorporate into LDL particles after you eat them. In one study, LDL isolated from people’s blood several hours after eating betalain-rich fruit showed significantly greater resistance to oxidative damage than LDL isolated before the meal, and the more betalains the particles had absorbed, the more resistant they were.6The American Journal of Clinical Nutrition. Absorption, excretion, and distribution of dietary antioxidant betalains in LDLs: potential health effects of betalains in humans Lab experiments confirmed this: LDL enriched with either indicaxanthin or betanin resisted copper-induced oxidation far longer than untreated LDL.7PubMed. Increased resistance to oxidation of betalain-enriched human low density lipoproteins
Betanin also appears to work through internal signaling pathways. It can scavenge free radicals directly by donating hydrogen atoms or electrons, and it activates the body’s own antioxidant gene expression while simultaneously dialing down inflammatory pathways.8PubMed. Betanin as a multipath oxidative stress and inflammation modulator: a beetroot pigment with protective effects on cardiovascular disease pathogenesis None of this will change your total cholesterol or LDL number, but it could make the LDL you already have less harmful. This distinction often gets lost when people frame cholesterol as the only marker that matters for heart health.
The Vitamin C Question
One of the more intriguing findings in the human literature is that beet-derived nitrate may work better when paired with vitamin C. A randomized crossover study in people with untreated high cholesterol tested dietary nitrate alone against nitrate combined with vitamin C. Nitrate by itself didn’t budge LDL, triglycerides, or oxidized LDL in any meaningful way. But the combination of nitrate and vitamin C produced significant reductions in both LDL and triglycerides, and it was the only treatment arm that significantly lowered oxidized LDL from baseline.9PubMed. The effect of dietary nitrate and vitamin C on endothelial function, oxidative stress and blood lipids in untreated hypercholesterolemic subjects: A randomized double-blind crossover study
A secondary analysis of a different trial in people with coronary artery disease found a similar pattern. Beetroot alone shifted fatty acid ratios in a favorable direction and lowered a marker of oxidative stress, but the beetroot-plus-vitamin-C group saw larger and more consistent improvements across multiple markers, including increases in omega-3 fatty acids.10PubMed Central. Effect of Beetroot Extract Supplementation on Serum Fatty Acid Profiles and Oxidative Stress Markers in Chronic Coronary Artery Disease Patients: A Secondary Analysis of a Randomized Controlled Trial These are small studies and far from definitive, but the vitamin C synergy keeps showing up, and it’s plausible. Vitamin C regenerates nitric oxide and protects nitrate from being converted into less useful byproducts, potentially amplifying the cardiovascular effects of beet-derived nitrate.
Beet Fiber Works Through a Peculiar Mechanism
Most discussions about beets and cholesterol focus on juice or extracts, but whole beets contain something juices usually don’t: fiber. And beet fiber behaves oddly compared to other fiber sources. In a controlled study, adding sugar-beet fiber to the diet increased cholesterol excretion from the small bowel by about 52%, which sounds great for getting cholesterol out of the body. But it simultaneously decreased bile acid excretion by about 26%.11British Journal of Nutrition. Sugar-beet fibre increases cholesterol and reduces bile acid excretion from the small bowel
That second finding is unusual. Fiber sources like oat bran and pectin typically increase bile acid excretion, which forces the liver to pull cholesterol from the bloodstream to make more bile acids. It’s one of the main mechanisms behind the cholesterol-lowering reputation of soluble fiber. Beet fiber appears to work through a different route entirely. The net effect on blood cholesterol levels is less clear-cut than what you’d get from a bowl of oatmeal, and it may help explain why whole beets don’t produce the straightforward cholesterol drop that people expect from a high-fiber vegetable.
Betaine and Liver Cholesterol Metabolism
Beets are one of the richest dietary sources of betaine, a compound involved in liver metabolism. You might expect betaine to lower cholesterol, but the picture from animal research is counterintuitive. In rats, dietary betaine actually increased cholesterol synthesis in the liver. However, it simultaneously ramped up the conversion of that cholesterol into bile acids and promoted the export of those bile acids into the intestine for elimination.12PubMed Central. Dietary Betaine Addition Promotes Hepatic Cholesterol Synthesis, Bile Acid Conversion, and Export in Rats On a high-fat diet, betaine prevented the decline in bile salt export that the high-fat diet otherwise caused.
So betaine doesn’t suppress cholesterol production. It accelerates the whole cycle: more cholesterol gets made, more gets converted to bile acids, and more bile acids get shipped out. Whether this nets out as lower blood cholesterol depends on how fast each step runs relative to the others. In practice, this complex metabolic juggling act may be why beetroot doesn’t produce a clean, one-directional drop in serum cholesterol the way a statin does.
One Small Pilot Study That Did Show a Drop
Not every human study drew a blank. A pilot study gave 22 men with early-stage high blood pressure a daily dose of beetroot powder (providing roughly 650 to 700 mg of nitrate) for seven days. Their total cholesterol dropped by about 10%, alongside a more than twofold increase in circulating nitrate and nitrite levels.13Russian Open Medical Journal. The Effect of Beetroot Powder (BETA-NO-BOOST), a Natural Source of Nitrate and Nitrite Ions, on Serum Lipids and Cardiovascular and Inflammatory Markers: A Pilot Study
This is a real finding, but context matters enormously. It was a small, uncontrolled pilot study lasting only a week, in a specific population of men with hypertension. A 10% reduction in total cholesterol would be clinically meaningful if it held up in larger trials with control groups, but single small studies in nutrition science routinely produce effects that shrink or vanish when replicated at scale. The meta-analysis that pooled multiple trials and found no effect carries far more weight. Still, the pilot study suggests there may be subgroups or specific conditions under which beets do something measurable to lipid levels. Identifying who those people are would require much larger, longer studies.
Diabetes, ApoB, and the Markers That Don’t Always Get Checked
In people with type 2 diabetes, raw red beetroot consumption for several weeks led to a notable decrease in apolipoprotein B100, a protein that rides on LDL particles and is increasingly considered a better predictor of cardiovascular risk than LDL cholesterol itself. The same study showed improvements in blood sugar, liver enzymes, and total antioxidant capacity.14PubMed Central. Effects of raw red beetroot consumption on metabolic markers and cognitive function in type 2 diabetes patients Yet another trial in type 2 diabetes patients using concentrated beetroot juice found no change in standard lipid panel markers at all.2PubMed Central. Effects of concentrated beetroot juice consumption on glycemic control, blood pressure, and lipid profile in type 2 diabetes patients: randomized clinical trial study
The discrepancy is instructive. The form of beetroot (raw versus concentrated juice), the duration, the specific markers measured, and the population studied all influence what you find. If you only look at LDL and total cholesterol, beets consistently underperform. If you widen the lens to include apoB, oxidized LDL, fatty acid profiles, and antioxidant markers, the picture gets more favorable. Most routine blood work doesn’t include those markers, which means the benefits beets might offer could be invisible on a standard lipid panel.
How You Prepare Beets Changes What They Do
Cooking method appears to matter more than most people realize. A study in rats with high lipid levels compared fresh, boiled, and steamed beetroot extracts and found that the steamed extract showed the best cardioprotective properties.15Scientific Reports. Impact of thermal processing on phytochemical profile and cardiovascular protection of Beta vulgaris L. in hyperlipidemic rats Boiling likely leaches water-soluble betalains and other active compounds into the cooking water, which most people discard. Steaming retains more of those compounds within the vegetable. Roasting, which is popular in home cooking, has not been as rigorously compared in the literature, but the general principle holds: the less water contact, the more bioactive compounds you keep.
This is worth keeping in mind if you’re eating beets for health reasons rather than just taste. Juicing concentrates the nitrate content but strips out the fiber. Cooking in large volumes of water dilutes the betalains. Eating beets raw or steamed probably preserves the broadest range of their active components.
What Beets Do to Your Gut Microbiome
An emerging area of research connects beetroot consumption to shifts in gut bacteria, which in turn influence bile acid metabolism and cholesterol handling. A two-week human pilot study found that drinking red beetroot juice led to transient changes in several bacterial groups. After three days, levels of Akkermansia muciniphila (a species associated with metabolic health) rose, while Bacteroides fragilis declined. Beet pigment breakdown products detected in stool correlated with increases in Bifidobacterium and Coprococcus and with a rise in butyric acid, a short-chain fatty acid that supports gut barrier function.16Food Chemistry. Effect of two-week red beetroot juice consumption on modulation of gut microbiota in healthy human volunteers – A pilot study
These microbial shifts are interesting because gut bacteria are directly involved in processing bile acids, which are made from cholesterol. Any food that reshapes the bacterial community could theoretically influence how much cholesterol your body recycles versus excretes. But “theoretically” is doing a lot of work in that sentence. The human beetroot-microbiome research is still in pilot-study territory, and the observed bacterial changes were often transient, returning toward baseline by the end of two weeks of daily consumption.
The Nitrate and Blood Pressure Connection
Even if beets don’t lower cholesterol directly, their effect on blood pressure is one of the most consistently documented findings in the beetroot literature. Beet juice is high in dietary nitrate, which your body converts into nitric oxide. Nitric oxide relaxes blood vessel walls, reducing blood pressure and improving blood flow.17PubMed. The benefits and risks of beetroot juice consumption: a systematic review High blood pressure and high cholesterol often travel together, and both contribute to cardiovascular disease through overlapping mechanisms. You might not get a cholesterol-lowering effect from beets, but you could get a meaningful reduction in blood pressure, which is its own form of cardiovascular protection.
Oxalates and Who Should Be Cautious
Beets are among a short list of foods shown to significantly increase urinary oxalate excretion. Research has identified only eight foods that reliably do this: beets, spinach, rhubarb, nuts, chocolate, tea, wheat bran, and strawberries.18Journal of the American Dietetic Association. Effect of dietary oxalate and calcium on urinary oxalate and risk of formation of calcium oxalate kidney stones For most people, this is a non-issue. But if you have a history of calcium oxalate kidney stones, or if you absorb oxalate at a high rate (which can happen with certain intestinal conditions), heavy beet consumption could increase your stone risk. This doesn’t mean you need to avoid beets entirely, but loading up on beet juice every day as a cholesterol strategy might warrant a conversation with your doctor if kidney stones are in your history.
The other commonly reported side effect, beeturia (red- or pink-tinged urine after eating beets), is harmless and affects a minority of people. It’s caused by unmetabolized betalain pigments passing through the kidneys and has no clinical significance, though it can be alarming if you aren’t expecting it.
Where Beets Fit Alongside Proven Cholesterol-Lowering Foods
If your goal is specifically to bring down LDL cholesterol through diet, beets are not in the top tier of evidence-backed options. Foods with the strongest and most replicated cholesterol-lowering effects include oats and barley (for their beta-glucan soluble fiber), nuts, soy protein, and plant sterols and stanols found in fortified foods. These have been studied in enough large trials that dietary guidelines routinely recommend them for cholesterol management.
Beets belong in a different category: foods that contribute to cardiovascular health through routes other than direct lipid lowering. Their blood-pressure effects are solid, their antioxidant protection of LDL is mechanistically plausible, and they contain fiber, folate, potassium, and a suite of polyphenols that support vascular function in ways that don’t show up on a cholesterol test. Eating beets as part of a varied, vegetable-rich diet is a reasonable choice for heart health. Eating beets as a targeted cholesterol intervention, based on current evidence, is not.