All about fruitarianism with a long-term fruitarian, Lena

Vitamin B-12 status did not change significantly after treatment in the placebo group with daily supplementation with high doses of oral vitamin B-12 alone or in combination with folic acid.

Oral vitamin B-12 supplementation corrected mild vitamin B-12 deficiency.

Vitamin B-12 + folic acid supplementation increased red blood cell folate concentrations and decreased total homocysteine concentrations by 36%.

Improvement in memory function was greater in the placebo group than in the group who received vitamin B-12 alone. Neither supplementation with vitamin B-12 alone nor that in combination with folic acid was accompanied by any improvement in other cognitive domains.


I count him braver who overcomes his desires than him who conquers his enemies, for the hardest victory is over self.

Recommended Dietary Allowance RDA

Recommended Dietary Allowance (RDA) - the average daily dietary nutrient intake level sufficient to meet the nutrient requirement of nearly all - ~97% - healthy individuals in a particular life stage and gender group. 

The process for setting the RDA depends on being able to set an Estimated Average Requirement (EAR). If an EAR cannot be set, no RDA will be set. The EAR is the daily intake value of a nutrient that is estimated to meet the nutrient requirement of half the healthy individuals in a life stage and gender group.

The RDA is set at the EAR plus twice the standard deviation (SD) if known (RDA = EAR + 2 SD). If data about variability in requirements are insufficient to calculate a standard deviation, a coefficient of variation for the EAR of 10% is ordinarily assumed (RDA = 1.2 x EAR).

The RDA for a nutrient is a value to be used as a goal for dietary intake by healthy individuals. The RDA is not intended to be used to assess the diets of either individuals or groups or to plan diets for groups. Apple