Vitamin B3- Niacin Flashcards
1
Q
Sources
A
-fortified breakfast cereals
-liver beef and fish
-some made in body
2
Q
Functions
A
-release of energy from food
-essential for heslthy skin
-prevents pellagra
3
Q
Deficiency
A
-Diarrhoea
-Dementia
-Dermatitis
-Death
4
Q
Excess
A
-lead to liver damage, a high dose causes dilation of the arteries and reduction of blood lipids
5
Q
Factors affecting absorption
A
-readily absorbed in small intestine
-alcohol inhibits formation
-sleeping pills and food processing destroys B3
-niacin made in body from amino acid tryptophan
-insoluble in water and small amounts lost during cooking