A deficiency of riboflavin can be primary - poor vitamin sources in one's daily diet - or secondary, which may be a result of conditions that affect absorption in the intestine, the body not being able to use the vitamin, or an increase in the excretion of the vitamin from the body.
Substantial evidence means more than a mere scintilla. It means such relevant evidence as a reasonable mind might accept as adequate to support a conclusion.. Richardson v. Perales, 402 U.S. 389, 401 (1971).
Circumstantial evidence is any indirect evidence of a fact that helps to establish the guilt or innocence of a defendant through reasoning. Circumstantial evidence is the result of combining seemingly unrelated facts that, when considered together, infer a conclusion that supports a litigantâs version of the facts.