However, an orange does not top the list of fruits for vitamin C content. Guava, kiwi fruit, or a cup of strawberries have more vitamin C than an orange. Vitamin C is one of the beneficial antioxidants found in our food that may provide protection against heart disease and cancer. Vitamin C can protect LDL cholesterol from oxidation and can also block the formation of nitrosamines, cancer causing chemicals. In addition, vitamin C enhances cellular immunity by promoting the killing ability of white blood cells.
Winter time is quite often flu season.
The results of many clinical trials have shown that while vitamin C does not prevent a cold, its use can slightly reduce the severity of cold symptoms and may somewhat reduce the duration of the cold. Higher doses of vitamin C do not provide any extra benefit. Pectin, a fiber found in citrus, is known to significantly lower blood cholesterol levels. Potassium protects against sodium-induced elevation of blood pressure. Orange juice helps replenish electrolytes in children with diarrhea.