Which disease is caused by low vitamin C?

The disease caused by low vitamin C is scurvy, and it takes remarkably little vitamin C to prevent it.

About 10 mg a day — roughly a seventh of an orange — is enough to keep scurvy away in a healthy adult. That is one ninth of the amount health authorities actually recommend. Yet in France, hospital admissions for scurvy among children have climbed since 2020.

This page explains what the disease is, what separates it from simply being low, and why a condition that cheap to prevent has not gone away.

Table of Contents

• 1. Which disease is caused by low vitamin C?
• 2. Where "low" ends and the disease begins
• 3. Why scurvy is really a collagen failure
• 4. How long it takes, and how little it takes to stop
• 5. Is scurvy the only disease low vitamin C causes?
• 6. Why a 10 mg disease still exists in 2026
• 7. Where absorption fits — and where it does not
• 8. Bio Absorb Nutraceuticals Liposomal Vitamin C
• Frequently Asked Questions
• Conclusion
• Research References

1. Which disease is caused by low vitamin C?

Scurvy. It is the only disease that a lack of vitamin C directly and reliably causes, and it has been recognised for centuries — long before anyone knew what a vitamin was.

The medical definition is narrow. Scurvy is the clinical syndrome that develops when the body runs out of vitamin C, and clinical references put the threshold at a plasma level below about 11 µmol/L, or 0.2 mg/dL. Below that line, the body can no longer carry out the chemistry that depends on vitamin C, and tissue starts to fail.

The number that surprises people is how small it is. Overt symptoms appear only when intake drops below roughly 10 mg a day for many weeks. A single medium orange contains around 70 mg. Scurvy is not a disease of eating badly; it is a disease of eating almost no fruit or vegetables at all, for months.

2. Where "low" ends and the disease begins

This is the distinction most articles blur, and it matters more than the symptom list. Falling below the recommended intake and having a disease are two different states, separated by a wide margin.

The adult recommended intake is 90 mg a day for men and 75 mg for women. That figure was never set to prevent scurvy. It was set around the intake that keeps white blood cells saturated and blood levels near their natural ceiling. Scurvy prevention needs about 10 mg. The recommendation sits roughly nine times higher, deliberately.

Between those two points is a graded scale, not a switch. Researchers describe a band of low-but-not-deficient status above the 11 µmol/L line, and a great many people sit in it without having any disease at all. If you are wondering about the early signs of running low, that is a separate question from whether you have scurvy — and the honest answer for most people is that they do not.

3. Why scurvy is really a collagen failure

Every classic sign of scurvy traces back to one job vitamin C does. It is a required cofactor for building collagen, the structural protein that holds connective tissue together.

Without it, the body cannot assemble sound collagen. And collagen is what gives strength to blood vessel walls, gums, skin, tendons and the base of every hair follicle. So the disease shows up first in the smallest and most fragile of those structures: pinpoint bleeding around hair follicles, coiled "corkscrew" hairs, gums that bleed and swell, bruising from minor knocks, and wounds that will not close.

Those are not a random collection of symptoms. They are one failure appearing in every tissue that depends on collagen at once. It also explains why hair changes show up in severe deficiency and why joints become painful — the same protein underpins both.

4. How long it takes, and how little it takes to stop

Scurvy is slow to arrive. Clinical sources describe signs developing after roughly one to three months of insufficient intake, and one reference sets the point of onset at a total body pool below about 350 mg.

The timing depends on where you started. Someone who has been eating well for years carries a reserve; someone already low does not. That is why two people on the same poor diet can develop the disease months apart.

Recovery is the opposite. Once vitamin C is restored, the clinical improvement is described as impressive, with replacement typically continuing for one to three months or until all signs resolve. Treatment doses are a medical decision and should come from a doctor, not a supplement label. Some groups need medical advice before supplementing at all.

5. Is scurvy the only disease low vitamin C causes?

Directly, yes. Scurvy is the named deficiency disease, and no other condition is established as being caused by low vitamin C on its own.

That said, the disease brings other problems with it. Anaemia is common in scurvy, reported in 75% of cases in one clinical series and the most common laboratory finding, arising from bleeding into tissues and from the way vitamin C helps the body absorb iron. Patients also frequently turn out to be low in vitamin B12, folate, calcium, zinc and iron, because the diet that caused the scurvy was short of everything, not just one nutrient.

It is worth being clear about the other direction too. Low vitamin C is often blamed for tiredness, low mood, frequent colds and poor skin. Fatigue and low mood genuinely are part of the deficiency picture. But these are common symptoms with many commoner causes, and having them does not mean you have a vitamin C problem. Research on vitamin C and joint conditions shows the same pattern: getting enough matters, but extra has shown little benefit in people who are not short.

6. Why a 10 mg disease still exists in 2026

Because the disease was never about food supply. It is about individual circumstance.

Canadian national survey data found mean plasma vitamin C of 53 µmol/L among adults aged 20 to 79, with fewer than 3% deficient. But that average hides the pattern that matters: deficiency reached 10% among smokers and 13% among people who rarely or never ate citrus fruit. Meanwhile, none of the survey respondents who took a vitamin C-containing supplement were deficient at all.

The trend is moving the wrong way. A population study of hospital admissions among children in France between 2015 and 2023 found a significant rise in scurvy after the COVID-19 pandemic, and the increase tracked the consumer price index. A 2026 systematic review of cases across high-income countries concluded that scurvy persists as a clinically under-recognised condition, concentrated in people with restrictive diets, neurodevelopmental conditions or difficult social circumstances. Fresh produce is the first thing to leave a tight food budget, and several everyday factors drain vitamin C faster than a thin diet replaces it.

7. Where absorption fits — and where it does not

This is the part worth being straight about, because it cuts against what a supplement company might be expected to say.

Scurvy is not an absorption problem. It is an intake problem. At the very low intakes where scurvy develops, the gut absorbs vitamin C almost completely — the body's transporters are efficient precisely when there is little to work with. So no delivery format prevents scurvy better than any other. Ten milligrams of plain ascorbic acid from a piece of fruit does the job.

Absorption becomes relevant much further up the scale. The proportion your body takes up falls sharply as the dose rises, which is why delivery format is debated at gram-level doses and not at the level that keeps scurvy away. A 2025 scoping review of ten trials found that nine showed higher bioavailability for liposomal vitamin C, with blood exposure 1.3 to 7.2 times higher depending on the formulation. Those are absorption measurements, not disease outcomes, and none of the trials studied scurvy. Our complete guide to liposomal vitamin C sets out what that evidence does and does not establish.

The honest summary: if your concern is scurvy, the answer is food and consistency, not a delivery system. If your concern is getting more of a larger dose into your blood, that is where the absorption evidence applies.

8. Bio Absorb Nutraceuticals Liposomal Vitamin C

Bio Absorb Nutraceuticals is a Canadian supplement company, and its vitamin C range exists for the part of the picture described in section 7 — helping more of a larger dose reach your bloodstream — rather than for preventing a deficiency disease. Nobody needs a liposomal supplement to avoid scurvy.

Where a supplement does earn its place is consistency. The Canadian survey finding is a useful one: among adults who took a vitamin C-containing supplement, none were deficient, and a global review reports the same direction of travel — people who supplement show higher average vitamin C status and a lower prevalence of deficiency. That is an argument for reliably getting enough, in whatever form suits you, particularly if you smoke, rarely eat fruit, or your diet varies week to week.

Bio Absorb's Liposomal Vitamin C is available in a liquid and a capsule format, both verified corn-free, non-GMO and third-party tested every batch, and both made in Canada in a GMP-certified facility. The liquid mixes with water or juice; the capsules need no refrigeration. The corn-free point matters more than it sounds: most ascorbic acid on the market is produced from corn, which is a genuine problem for people avoiding it.

Product specifications change over time, so this page does not quote them. See current pricing and serving details on the product page, which is always up to date.

Frequently Asked Questions

Is scurvy the same thing as vitamin C deficiency?

Close, but not identical. Deficiency is a blood measurement — plasma vitamin C below 11 µmol/L — while scurvy is the clinical disease that develops at or below that level. You can be measurably deficient before visible signs of the disease appear.

How long would it take to develop scurvy?

Clinical sources describe signs appearing after roughly one to three months of eating almost no vitamin C, with one reference putting onset at a total body pool below about 350 mg. The timing depends heavily on how well stocked you were to begin with.

Can you still get scurvy in Canada?

Yes, though it is uncommon. National survey data put deficiency at fewer than 3% of Canadian adults, rising to 10% among smokers and 13% among people who rarely ate citrus fruit. Hospital cases among children in France have been rising since 2020, and a 2026 review found scurvy persists across high-income countries as an under-recognised condition.

Does scurvy cause permanent damage?

Treated in time, recovery is usually complete, and clinical references describe the improvement after treatment as impressive. Left untreated, scurvy is fatal, which is why suspected cases need a doctor rather than a supplement.

Can a supplement prevent scurvy?

Any form of vitamin C will, since the requirement is about 10 mg a day. In Canadian survey data, none of the adults taking a vitamin C-containing supplement were deficient. Food does the same job, and a single orange a day clears the bar comfortably.

Does liposomal vitamin C protect against scurvy better than regular vitamin C?

There is no evidence that it does, and no reason to expect it. Absorption differences between formats show up at high doses, not at the roughly 10 mg that prevents the disease. Format choice is a question about larger daily doses, not about deficiency disease.

Conclusion

Scurvy is the disease caused by low vitamin C, it is a collagen failure at heart, and it takes only about 10 mg a day to prevent — yet it is quietly returning in wealthy countries. If your diet regularly includes fruit and vegetables, this is not your problem. If it does not, the fix is closer and cheaper than most people expect. See the full product specification if a consistent daily supplement would help you close the gap.

Research References

1. Contemporary Scurvy in Vulnerable Populations in High-Income Countries: A Systematic Review and Multilevel Meta-Analysis. Nutrients, Vol. 18, No. 14, Article 2213 (2026). Found that scurvy persists in high-income countries as a clinically under-recognised condition, concentrated among people with restrictive diets, neurodevelopmental conditions and social vulnerability, and confirmed the plasma threshold of approximately 11 µmol/L for clinically manifest disease.
2. Scurvy incidence trend among children hospitalised in France, 2015–2023: a population-based interrupted time-series analysis. The Lancet Regional Health – Europe, Vol. 49 (2025). Documented a significant rise in hospitalised scurvy among French children following the COVID-19 pandemic, correlated with increases in the consumer price index — the evidence behind this article's statement that scurvy is re-emerging. The cohort is children under 18 only.
3. Vitamin C status of Canadian adults: Findings from the 2012/2013 Canadian Health Measures Survey. Health Reports (Statistics Canada), Vol. 27, No. 5 (2016). Nationally representative data showing mean plasma vitamin C of 53 µmol/L, fewer than 3% of adults deficient, 10% among smokers and 13% among those rarely eating citrus, and no deficiency at all among supplement users.
4. Vitamin C. Advances in Nutrition (2023). Review establishing that clinical scurvy can be prevented with as little as 10 mg per day, that the disease is fatal if untreated, and that the recommended intake was set around plasma and leukocyte saturation rather than scurvy prevention.
5. Do Liposomal Vitamin C Formulations Have Improved Bioavailability? A Scoping Review Identifying Future Research Directions. Basic & Clinical Pharmacology & Toxicology, Vol. 137, e70067 (2025). Scoping review of 10 trials in which 9 showed higher bioavailability for liposomal vitamin C, with 1.2–5.4-fold higher peak concentrations and 1.3–7.2-fold higher total blood exposure; none measured disease outcomes.
6. Factors Affecting Vitamin C Status and Prevalence of Deficiency: A Global Health Perspective. Nutrients, Vol. 12, No. 7, Article 1963 (2020). Review explaining why humans must obtain vitamin C from the diet, and showing that supplement users consistently record higher vitamin C status and lower deficiency prevalence.
7. Scurvy: A Diagnosis Not to Be Missed. Cureus, Vol. 14, No. 12, e33050 (2022). Case series reporting that signs develop after one to three months of insufficient intake and that anaemia, seen in 75% of patients, is the most common laboratory finding in scurvy.
8. Vitamin C — Fact Sheet for Health Professionals. National Institutes of Health, Office of Dietary Supplements. Source for the 10 mg/day deficiency threshold, the 90 mg and 75 mg adult recommended intakes, the 70 mg in a medium orange, and the observation that cells saturate at intakes around 100 mg/day.
9. Vitamin C — Consumer Fact Sheet. National Institutes of Health, Office of Dietary Supplements. Plain-language confirmation that deficiency is rare in the United States and Canada, that scurvy follows intake below about 10 mg/day for many weeks, and that untreated scurvy is fatal.
10. Vitamin C Deficiency. Merck Manual Professional Edition. Source for the definition of scurvy as a disorder of haemorrhagic manifestations and abnormal osteoid and dentin formation, and for the 11 µmol/L deficiency and 34 µmol/L marginal thresholds.
11. Vitamin C Deficiency. StatPearls. Clinical reference confirming that scurvy is the syndrome resulting from vitamin C deficiency, that clinical signs appear once the total body pool drops below about 350 mg, that plasma below 0.2 mg/dL is consistent with scurvy, that replacement typically continues for one to three months until signs resolve, and that patients are frequently also low in B12, folate, calcium, zinc and iron.
12. Scurvy (Vitamin C Deficiency): Practice Essentials, Pathophysiology, Etiology. Medscape / eMedicine. Background reference on the pathophysiology of scurvy and the timeline of dietary elimination before onset.

About the Author

David Kimbell is a health writer, digital entrepreneur and former aerospace engineer, based in Ottawa, Canada. He loves translating complex science into clear, actionable guidance for consumers seeking evidence-based solutions.

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Important Disclaimers

Medical Disclaimer: This article provides educational information only and is not intended as medical advice. Always consult with a qualified healthcare provider before starting any new supplement, especially if you have existing health conditions, take medications, or are pregnant or nursing.

FDA/Health Canada Statement: These statements have not been evaluated by the Food and Drug Administration or Health Canada. This product is not intended to diagnose, treat, cure, or prevent any disease.