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).
Substantial evidence means more than a mere scintilla. Richardson v. Perales, 402 U.S. 389, 401 (1971). [w]here there is such relevant evidence as reasonable minds might accept as adequate to support a conclusion even if it is possible to draw two inconsistent conclusions from the evidence. Landes v. Royal, 833 F.2d 1365, 1371 (9th Cir. 1987).'Substantial' evidence is not synonymous with 'any' evidence.