NUTR 1010 Lecture Notes - Lecture 11: Phytic Acid, Cardiovascular Disease, Collagen
21 Apr 2016
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Document Summary
Inorganic element that your body needs in order to function. Major minerals need more than 100mg/d: calcium, phosphorus and magnesium. Trace elements you need less than 100mg/d: iron, zinc, copper, selenium, iodine. Structural roles: calcium, magnesium, phosphorus and fluoride are needed for the structure of bone. Regulatory roles: iodine is used to make thyroid hormones metabolic rate, iron is needed for oxygen transport, many minerals are needed as cofactor for enzymes. A major mineral we need > 100mg per day. Makes up for 2% of body weight. Active transport accounts for majority of calcium absorption: only about 25% of the calcium in foods is absorbed, less if you have a diet low in vitamin d, more like 50% when you"re pregnant. Passive transport kicks in at high calcium intake: intake , less absorbed. Getting the most out of your calcium: bioavailability.
