Rather, it is an amoral and scientificanalysis of rhetoric, defined as âthe faculty of discovering in the particularcase what are the available means of persuasionâ (L. Cooper, 1932, p. 7).Yet, in Rhetoric, Aristotle establishes the concept of credibility (ethos) as aform of proof and mode of persuasion.
The recommended dietary allowances (RDAs) of vitamin B12 are: Infants 0-6 months, 0.4 mcg; infants 7-12 months, 0.5 mcg; children 1-3 years, 0.9 mcg; children 4-8 years, 1.2 mcg; children 9-13 years, 1.8 mcg; older children and adults, 2.4 mcg; pregnant women, 2.6 mcg; and breast-feeding women, 2.8 mcg. Injecting vitamin B12 as a shot for 10 days followed by monthly injections for the remainder of life is effective for treating people with an inherited disease that results in poor absorption of vitamin B12. 2  Pernicious anemia.
People over 50 years of age should consume vitamin B12-fortified foods, or take a vitamin B12 supplement - 25-100 mcg per day has been used to maintain vitamin B12 levels in older people.eople over 50 years of age should consume vitamin B12-fortified foods, or take a vitamin B12 supplement - 25-100 mcg per day has been used to maintain vitamin B12 levels in older people.