Niacin
from class: Nutrition for Nurses Definition Niacin, also known as Vitamin B3, is a water-soluble vitamin that plays a critical role in energy metabolism and cellular function. It is essential for the health of the nervous system and skin.
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Predict what's on your test 5 Must Know Facts For Your Next Test Niacin is involved in the synthesis of NAD and NADP, which are crucial for cellular metabolism. Deficiency in niacin can lead to pellagra, characterized by dermatitis, diarrhea, and dementia. Niacin has been shown to improve cholesterol levels by lowering LDL and triglycerides while raising HDL. High doses of niacin can cause flushing, a common side effect where the skin turns red and feels warm. Dietary sources of niacin include meat, fish, poultry, enriched and whole grain breads. Review Questions What are the primary functions of niacin in the body? Which condition is associated with severe niacin deficiency? How does niacin impact cholesterol levels?
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