Dietary vitamin C: Bigger daily dose?

Evidence regarding the minimal daily requirement of dietary vitamin B12.

The minimal daily requirement of dietary vitamin B12 is defined as that amount which must be ingested in the diet to prevent the occurrence of megaloblastosis, anemia, or other manifestations of vitamin B12 deficiency. An attempt has been made to define this requirement by studying hematological responses to varying amounts of the vitamin in five south Indian subjects with vitamin B12 deficienc...

Severe hypercalcaemia syndrome with daily low-dose vitamin D supplementation.

Dietary intakes of vitamin C in Iceland.

I t has been estimated that the caloric value of the food produced in Iceland is more than three times higher than that needed to satisfy the energy requirements of the inhabitants (Sigurjonsson, 1948). R,lore than 80% (according to caloric value) is fish and fish products, of which the greatest part is exported. The home production of milk and dairy products is sufficient except that some butt...

Association between dietary vitamin C intake and risk of esophageal cancer: A dose-response meta-analysis.

While several epidemiological studies have investigated the association between vitamin C and risk of esophageal cancer, the results remain inconsistent. In the present study, a meta-analysis was conducted to assess the impact of dietary vitamin C intake on esophageal cancer risk. Online databases were searched up to March 29, 2015, for studies on the association between dietary vitamin C intak...

High-dose vitamin C and cancer

Vitamin C (ascorbic acid, ascorbate) is a basic compound that is of great importance with its role in various enzymatic reactions including the synthesis of collagen, as well as with its redox functions. Vitamin C has become the center of interest in cancer studies, in consequence of the facts that connective tissue changes and vitamin C deficiency were first alleged to be associated with cance...