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).
The general rule is that all irrelevant evidence is inadmissible and all relevant evidence is admissible. There are two basic factors that are considered when determining whether evidence is admissible or not: Relevant â The evidence must prove or disprove an important fact in the criminal case. If the evidence doesn't relate to a particular fact, it is considered irreelvant and is therefore inadmissible.