Vitamin C Quiz

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Questions and Answers

What is the chemical name for Vitamin C?

Ascorbic acid and ascorbate

What is the primary function of Vitamin C in the body?

Repair of tissue, formation of collagen, enzymatic production of certain neurotransmitters, and immune system function

Which animals are unable to synthesize their own vitamin C?

Apes (including humans) and monkeys, most bats, some rodents, and certain other animals

When was Vitamin C discovered and isolated?

Discovered in 1912, isolated in 1928 Signup and view all the answers

Who were awarded the 1937 Nobel Prizes in Physiology and Medicine and Chemistry for the discovery of Vitamin C?

Albert Szent-Györgyi and Walter Norman Haworth Signup and view all the answers

What are some foods containing vitamin C?

Citrus fruits, kiwifruit, guava, broccoli, Brussels sprouts, bell peppers, potatoes, and strawberries Signup and view all the answers

What may reduce vitamin C content in foods?

Prolonged storage or cooking Signup and view all the answers

What is the definitive role of vitamin C?

Treating scurvy, which is a disease caused by vitamin C deficiency Signup and view all the answers

What are some medical uses of vitamin C?

It is on the World Health Organization's List of Essential Medicines and available as an inexpensive generic and over-the-counter medication Signup and view all the answers

What is the essential nutrient for certain animals including humans?

Vitamin C Signup and view all the answers

What are some ascorbate salts used in dietary supplements?

Sodium ascorbate and calcium ascorbate Signup and view all the answers

What is the function of vitamin C in enzymatic reactions?

It functions as a cofactor Signup and view all the answers

At what level are vitamin C blood serum levels considered saturated?

Levels > 65 μmol/L Signup and view all the answers

What is scurvy?

A disease resulting from a deficiency of vitamin C Signup and view all the answers

Who were involved in human dietary studies of experimentally induced scurvy during World War II?

Conscientious objectors in Britain and Iowa state prisoners Signup and view all the answers

What is the role of vitamin C as an antioxidant?

It acts as an antioxidant Signup and view all the answers

What is the conclusion of the Cochrane review regarding routine vitamin C supplementation?

The failure of vitamin C supplementation to reduce the incidence of colds in the general population indicates that routine vitamin C supplementation is not justified. Signup and view all the answers

What role does vitamin C play in immune system regulation?

Vitamin C distributes readily in high concentrations into immune cells, has antimicrobial and natural killer cell activities, promotes lymphocyte proliferation, and is consumed quickly during infections, suggesting a prominent role in immune system regulation. Signup and view all the answers

According to the European Food Safety Authority, what relationship exists between vitamin C intake and the immune system?

The European Food Safety Authority found a cause and effect relationship exists between the dietary intake of vitamin C and functioning of a normal immune system in adults and in children under three years of age. Signup and view all the answers

What specific antiviral effects does Vitamin C have?

Several studies found Vitamin C to have specific antiviral effects in which it inactivates the RNA or DNA of viruses or in the assembly of the virus. Signup and view all the answers

How many completed or ongoing COVID-19 clinical trials included vitamin C as a treatment as of early 2021?

50 completed or ongoing COVID-19 clinical trials included vitamin C as a treatment as of early 2021. Signup and view all the answers

What were the reported outcomes in the meta-analysis of six published COVID-19 clinical trials involving vitamin C?

Reported outcomes were mortality, hospitalization duration, intensive care duration, and need for ventilation. Signup and view all the answers

What did the conclusion of the meta-analysis of six published COVID-19 clinical trials involving vitamin C indicate?

The present meta-analysis showed that administration of vitamin C did not have any effect on major health outcomes in COVID infected patients, in comparison to either placebo/standard therapy. Signup and view all the answers

What was the range of dose for vitamin C administration in the COVID-19 clinical trials?

Dose ranged from 50 mg/kg/day to 24 g/day in the COVID-19 clinical trials. Signup and view all the answers

Study Notes

Vitamin C: Key Facts and Medical Uses

Vitamin C is on the World Health Organization's List of Essential Medicines
It is available as an inexpensive generic and over-the-counter medication
Albert Szent-Györgyi and Walter Norman Haworth were awarded the 1937 Nobel Prizes in Physiology and Medicine and Chemistry for its discovery
Foods containing vitamin C include citrus fruits, kiwifruit, guava, broccoli, Brussels sprouts, bell peppers, potatoes, and strawberries
Prolonged storage or cooking may reduce vitamin C content in foods
Vitamin C is an essential nutrient for certain animals including humans
Ascorbate salts like sodium ascorbate and calcium ascorbate are used in some dietary supplements
Vitamin C functions as a cofactor in enzymatic reactions and acts as an antioxidant
Vitamin C blood serum levels are considered saturated at levels > 65 μmol/L
Scurvy is a disease resulting from a deficiency of vitamin C
Notable human dietary studies of experimentally induced scurvy were conducted on conscientious objectors during World War II in Britain and on Iowa state prisoners
Vitamin C has a definitive role in treating scurvy, which is a disease caused by vitamin C deficiency

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