BLG 230 Lecture Notes - Cardiac Arrhythmia, Vitamin K, Brown Bread
Document Summary
Often interact with enzymes to speed up metabolic reactions. Most are essential (must be absorbed from food) Only vitamin d (skin) and vitamin k (gut bacteria) are non-essential (produced by body) Fat soluble: vitamin a: vision, growth, reproduction, vitamin d: regulates calcium levels, bone formation, vitamin k: blood clotting. Water soluble: vitamin c: antioxidant, wound healing, synthesis of adrenaline, bone formation, vitamin b12 and folic acid: cell division (low levels cause anaemia) Supplements: vitamins a and d (fat soluble) Only small amounts are needed, rest stored within liver. Excessive intake from supplements can cause liver damage: vitamin c (and other water soluble vitamins) Not stored - regular intake required for good health. In the uk, supplements are only useful for. Chloride: maintain osmotic pressure, required for acid production in stomach. Potassium: abnormal levels cause abnormal heart rhythms. Calcium: bones and teeth, regulation of heartbeat, muscle contraction, blood clotting, nerve and brain function (important for synapses)
