Test Your Knowledge

Vitamin C is a nutrient needed for normal growth and development. Among other functions, it helps repair wounds and is vital to maintaining healthy bones, cartilage, gums and teeth. In recent years, there has been a lot of speculation about the role of vitamin C in prevention of the common cold. Many studies have been conducted, with mixed results.

Some studies appear to show that taking anywhere from 1,000 to 6,000 milligrams of vitamin C a day can reduce the length of a cold by a day, and may slightly relieve symptoms such as runny nose and sore throat. However, this amount is more than 100 times the recommended dietary allowance (RDA). The body can absorb a limited amount of vitamin C at one time and excess amounts have the potential to lead to health problems.

Meanwhile, other studies have not found any link between vitamin C consumption and reduced cold symptoms. Experts generally agree that conclusive evidence has yet to emerge about the potential role of vitamin C in preventing colds or reducing the symptoms of these illnesses.

For now, people are urged to take only the recommended daily dose of vitamin C. Although the evidence is inconclusive about whether or not vitamin C protects against colds, drinking beverages rich in vitamin C, such as orange juice and grapefruit juice, does provide fluids and extra energy necessary to restore a patient’s health.

All fruits and vegetables contain vitamin C, although the amount varies from food to food. It is best to eat fresh fruit and vegetables that are raw as cooking destroys some of the vitamin’s beneficial properties. It is recommended that individuals try to receive vitamin C from dietary sources rather than from supplements.