Beetroot
The blood pressure vegetable. Dietary nitrates convert to nitric oxide and widen blood vessels — this mechanism is supported by over 40 clinical trials.
TLDR — What You Need to Know
- Dietary nitrates (250mg/100g) are converted to nitric oxide via the oral bacteria-saliva-stomach pathway — this is the mechanism behind blood pressure reduction
- Multiple randomised controlled trials confirm that beetroot juice lowers systolic blood pressure by 4-10 mmHg within 2-3 hours
- Athletic performance: 2-3% improvement in time-trial endurance in trained athletes in multiple RCTs — the equivalent of training gains from months of work
- Folate 109µg per 100g — nearly 30% of daily needs — essential for neural tube development in early pregnancy
- Beeturia (red or pink urine after eating beetroot) affects 10-14% of people — harmless, not blood, depends on stomach acidity and iron status
- GI of 61 but glycaemic load is low (GL ~5) due to high water content — safe for diabetics in normal portions
What Is Beetroot?
Beetroot (Beta vulgaris) is the taproot portion of the beet plant, a member of the Amaranthaceae family. The wild ancestor of beetroot was a coastal plant native to the Mediterranean and Atlantic shores of Europe and Asia. The deep red garden beetroot familiar today was developed through selective cultivation in the 16th and 17th centuries. Before the sweet red beetroot became dominant, people consumed primarily the leaves — beet greens, which are still edible and highly nutritious.
India grows beetroot primarily in Maharashtra, Karnataka, Himachal Pradesh, and Uttarakhand, with production increasing significantly as awareness of its health properties grows. In Karnataka, beetroot appears in breakfast palya, sambar, and the beloved beetroot raita.
The characteristic deep red-purple colour of beetroot comes from betalain pigments — specifically betacyanins (red) and betaxanthins (yellow). These pigments are different from the anthocyanins found in other red and purple vegetables and have their own distinct antioxidant and anti-inflammatory activities.
Nutritional Profile
Beetroot — Nutrition Facts per 100g Raw
Per 100g raw
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Energy | 43 kcal | — |
| Protein | 1.6 g | — |
| Total Fat | 0.2 g | — |
| Carbohydrates | 9.6 g | — |
| Dietary Fiber | 2.8 g | — |
| Vitamin C | 5 mg | 6% |
| Folate | 109 µg | 27% |
| Dietary Nitrates | ~250 mg | — |
| Potassium | 325 mg | 7% |
| Manganese | 0.33 mg | 14% |
| Betacyanin (Betalain) | 60–200 mg | — |
| Iron | 0.8 mg | — |
Health Benefits
1. Blood pressure reduction via dietary nitrates
This is the most rigorously studied health effect of beetroot. The mechanism is well understood: dietary nitrates (NO3) in beetroot are reduced to nitrite (NO2) by bacteria on the tongue during chewing. Nitrite is then converted to nitric oxide (NO) in the acidic stomach environment. Nitric oxide is a potent vasodilator — it signals smooth muscle cells in arterial walls to relax, widening the vessels and reducing blood pressure.
A landmark meta-analysis published in the Journal of Nutrition (2013) analysed 16 randomised trials and found beetroot juice consumption reduced systolic blood pressure by an average of 4.4 mmHg and diastolic by 1.1 mmHg. A 4mmHg reduction in systolic blood pressure corresponds to approximately a 10% reduction in stroke risk at the population level.
Important caveat: antiseptic mouthwash kills the oral bacteria necessary for the nitrate-to-nitrite conversion step, completely blocking the blood pressure effect. Do not use antibacterial mouthwash before consuming beetroot for its cardiovascular benefits.
2. Athletic performance enhancement
The same nitric oxide mechanism that reduces blood pressure also improves exercise efficiency. Nitric oxide reduces the oxygen cost of submaximal exercise — meaning the same work can be performed with less oxygen demand. For endurance athletes, this translates to improved performance.
Multiple independent RCTs, including studies from Exeter University and the Australian Institute of Sport, have shown that 500ml of beetroot juice (or equivalent nitrate dose) consumed 2-3 hours before exercise improves time-trial performance in cycling and running by 1-3%. In elite athletes where marginal gains matter, this is substantial. The effect is less pronounced in highly trained athletes whose cardiovascular efficiency is already optimised.
3. Folate and pregnancy
Beetroot is among the most concentrated folate sources in the vegetable kingdom, providing 109µg per 100g — approximately 27% of the 400µg daily recommendation. Folate (Vitamin B9) is essential for DNA synthesis and cell division. Neural tube defects (spina bifida, anencephaly) occur in the first 28 days of pregnancy — often before a woman knows she is pregnant — making pre-conception folate intake critical. Beetroot is a valuable dietary folate source alongside lentils and green leafy vegetables.
4. Betacyanin — anti-inflammatory and antioxidant
Betacyanin (the red betalain pigment) has demonstrated anti-inflammatory activity in cell studies and animal models, inhibiting NF-kB pathway signalling — the master switch for inflammatory gene expression. Epidemiological data linking beetroot consumption to reduced inflammation markers in humans is preliminary but consistent. The anti-inflammatory properties may partly explain beetroot’s association with improved exercise recovery.
5. Liver support
Betaine, a compound derived from the metabolism of betacyanin, is a methyl donor involved in liver detoxification pathways. Betaine supplementation is used clinically in non-alcoholic fatty liver disease. While whole beetroot contains betaine at modest levels, regular consumption contributes to the dietary methyl donor pool supporting liver function.
Beeturia — Why Urine Turns Red
Approximately 10-14% of people experience beeturia — pink or red urine after consuming beetroot. This is caused by unmetabolised betacyanin passing through the kidneys. Whether this occurs depends on stomach acidity (low acid = more betacyanin survives) and iron status (iron deficiency reduces betacyanin metabolism). Beeturia is entirely harmless and not blood. If you notice red urine after eating beetroot, it simply means your stomach acid was insufficient to metabolise the pigment. If you notice red urine and have not consumed beetroot, that warrants medical attention.
Glycaemic Index vs Glycaemic Load
A common misconception: beetroot has a high glycaemic index of approximately 61 and is therefore unsuitable for diabetics. This is a partial truth. Glycaemic index measures blood sugar response relative to glucose, but glycaemic load (GL) accounts for the actual carbohydrate content per realistic serving. Beetroot is 91% water and has only 9.6g carbohydrates per 100g. The glycaemic load of a typical 80g serving is approximately 5 — classified as low (below 10). Diabetics can safely consume moderate beetroot portions. The fibre content (2.8g/100g) further blunts the blood sugar response.
Side Effects and Who Should Avoid
Kidney stones (oxalate): Beetroot is relatively high in oxalates. Those with a history of calcium-oxalate kidney stones should moderate intake and ensure adequate hydration. This does not mean complete avoidance — but regular large-portion consumption is inadvisable without medical guidance.
Gout: Beetroot contains purines. Those managing gout who are on low-purine diets should moderate beetroot consumption and discuss optimal intake with their physician.
Iron overload (haemochromatosis): Beetroot contains iron and may stimulate iron absorption. Those with hereditary haemochromatosis should be aware of this.
Organic vs Conventional
Beetroot is generally considered a low-pesticide crop. It is not on the EWG Dirty Dozen list. The thick outer skin provides a physical barrier against topical pesticide penetration. However, systemic fungicides and herbicides applied to the soil can be taken up through the root. Organic beetroot is preferable but is a lower priority than thin-skinned produce.
How to Select and Store
Selecting: Choose firm, smooth beetroots with deep, even colour and intact skin. If leaves are attached, they should be bright green and crisp — wilted leaves indicate age. Smaller beetroots tend to be sweeter and more tender than very large ones, which can be fibrous and woody.
Storing: Remove the tops (leaves and stems) before storing, as they draw moisture from the root. Store in the refrigerator in a sealed bag or container. Beetroots keep well for 2-3 weeks under refrigeration. The cut surface dries quickly — cover with a damp cloth or plastic wrap after cutting.
Beetroot vs Carrot vs Radish — Antioxidant and Nutrient Comparison per 100g
| Parameter | Beetroot | Carrot | Radish |
|---|---|---|---|
| Energy | 43 kcal | 41 kcal | 16 kcal |
| Fiber | 2.8g | 2.8g | 1.6g |
| Folate | 109µg | 19µg | 25µg |
| Vitamin C | 5mg | 6mg | 15mg |
| Beta-carotene | 20µg | 8285µg | 4µg |
| Dietary Nitrates | ~250mg | ~90mg | ~250mg |
| Primary antioxidant | Betacyanin | Beta-carotene | Glucosinolates |
Radish is surprisingly high in nitrates (comparable to beetroot) and low in calories. Carrot dominates in beta-carotene. Beetroot is unique in folate and betacyanin content.
A cooling Karnataka-style yogurt condiment with grated raw beetroot. Preserves all the nitrates and folate of raw beetroot while the yogurt adds probiotic benefit.
Key Ingredients
2 medium beetroots, peeled and grated · 200g fresh curd (yogurt) · 1/2 tsp roasted cumin powder · 1/4 tsp mustard seeds · 5 curry leaves · 1 tsp coconut oil · Salt to taste · Fresh coriander to garnish
Home Test: Natural vs Artificial Colour Test for Beetroot Juice
Steps
- 1 Squeeze fresh juice from a raw beetroot — deep magenta-red colour is normal
- 2 To test packaged or diluted beetroot juice: add a few drops to a small amount of white vinegar
- 3 Observe the colour change
- 4 Natural betacyanin from beetroot is pH-sensitive: it turns bright pink-red in acid (vinegar)
- 5 Artificial food dyes typically do not change colour in mild acid
Pure / Pass
The juice turns brighter pink-red when mixed with vinegar — consistent with the pH-sensitive behaviour of natural betacyanin pigment. The juice is genuine beetroot extract.
Adulterated / Fail
No colour change in acid, or the colour changes to a brown or unrelated colour — suggests artificial colouring agents rather than natural betacyanin. The product is adulterated or synthetic.
Available at Organic Mandya
Organic Beetroot
Naturally grown. Maximum dietary nitrates. No synthetic fertilisers — the blood pressure vegetable at its best.
Frequently Asked Questions
Q Can beetroot actually lower blood pressure?
Can beetroot actually lower blood pressure?
Yes — this is one of the most robustly evidenced dietary effects in nutrition science. Over 40 clinical trials have tested beetroot juice or dietary nitrate supplements on blood pressure. A meta-analysis found average reductions of 4-5 mmHg systolic. The effect is acute (peaks 2-3 hours after consumption) and needs ongoing regular consumption to maintain the benefit. It is not a replacement for prescribed blood pressure medication but is a meaningful dietary adjunct.
Q Is beetroot safe during pregnancy?
Is beetroot safe during pregnancy?
Yes, and it is actively recommended. The 109µg folate per 100g makes beetroot one of the best dietary sources of this essential nutrient for foetal neural tube development. Combine with other folate-rich foods (lentils, spinach) and discuss folic acid supplement needs with your doctor. The nitrates, iron, and antioxidants are also beneficial during pregnancy.
Q Is the red colour in urine after eating beetroot dangerous?
Is the red colour in urine after eating beetroot dangerous?
No — this is called beeturia and is completely harmless. It occurs in 10-14% of people when unmetabolised betacyanin pigment passes through the kidneys. The likelihood depends on your stomach acidity and iron status. If you see red or pink urine and you have recently eaten beetroot, it is almost certainly beeturia. If you see red urine without having eaten beetroot, consult a doctor as it could indicate blood in urine (haematuria).
Q Can diabetics eat beetroot?
Can diabetics eat beetroot?
Yes, in normal portions. Despite a moderate glycaemic index of 61, beetroot has a very low glycaemic load (~5 per 80g serving) because it is mostly water. The fibre content further moderates blood sugar response. Several studies suggest dietary nitrates from beetroot may also improve insulin sensitivity. A serving of 80-100g beetroot in a meal alongside protein and fat is safe for most diabetics.
Last updated: March 2026
Disclaimer: This article is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor or a qualified healthcare provider before making dietary changes, especially if you have a medical condition.