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Tables 7a. Vitamins
Requirement
(Adult)
Function Deficiency Toxicity
Examples of
Food Sources
VITAMINS
Thiamin
(Vit B1):
1.2 mg/day for
males;
1.1 mg/day for
females
Needed for
carbohydrate
and protein
metabolism
and functions
of the heart,
muscles,
and nervous
system
Weakness,
fatigue,
psychosis,
nerve
damage
Not identified
Fortified breads
and cereals,
whole grains,
lean meats,
(e.g. pork), fish,
soybeans
Riboflavin
(Vit B2):
1.3 mg/day for
males;
1.1 mg/day for
females
Needed
for energy
production
and red
blood cell
production
Fatigue,
sore throat,
and swollen
tongue (all
rare)
Not identified
Lean meat,
eggs, nuts,
green leafy
vegetables,
milk and milk-
based products,
fortified cereals
Niacin
(Vit B3):
16 mg/day for
males;
14 mg/day for
females
Needed
for energy
production
and health of
the digestive
system, skin,
and nerves
Pellagra
(symptoms
include
diarrhea,
dementia, and
dermatitis)
Liver
damage,
peptic ulcers,
skin rashes,
skin flushing
Poultry, dairy
products, fish,
lean meats,
nuts, eggs
Pantothenic
Acid
(Vit B5):
5 mg/day
Needed
for energy
production
Typically no
toxicity
Diarrhea
(rare)
Eggs, fish,
milk and milk
products, lean
beef, legumes,
brocolli
Biotin:
30 μg/day
Needed
for energy
production
Typically no
toxicity
Diarrhea
(rare)
Eggs, fish,
milk and milk
products, lean
beef, legumes,
brocolli
Vit B6:
1.3 mg/day for
ages 19-51;
1.7 mg/day
for males and
1.5 mg/day for
females age
51 above;
Needed
for protein
metabolism,
immune and
nervous
system
functions
Dermatitis,
sore tongue,
depression,
confusion
Neurological
disorders and
numbness
Beans, nuts,
legumes, eggs,
meats, fish,
whole grains,
fortified cereals
and breads