NTR 222 LM 10 Outline.docx - Learning Module 10 Minerals...

This preview shows page 1 - 4 out of 10 pages.

Learning Module 10: Minerals and Multis Notes A. Periodic Table of the Elements a. Minerals = elements b. 2 major elements in the body: i. Na ii. K c. Inorganic B. Minerals a. Retain identity – cannot be destroyed i. Can leech it out of foods 1. Ex: K – water soluble mineral a. Cook a potato in lots of water leech out K b. But haven’t destroyed it c. Still has identity it’s just in the water now d. So prob not going to get it into your body 2. Ex: Vit C – water soluble vitamin a. Can leech it out of the food b. Can also destroy its structure b. Variable Bioavailability: i. Some minerals like zinc, calcium and iron have very low fractional absorption 1. Don’t absorb 100% ii. Others like Na – are very absorbable 1. Absorb close to 100% c. Nutrient Interactions i. Binders in foods: 1. Bind up w/ certain minerals and decrease their absorption C. Absorption Chart a. Fractional Absorption – not all or nothing i. Percentage that you are absorbing b. Ex: As you absorb calcium – intake up to 400-500 i. The percentage that you are absorbing starts to drop c. Calcium absorption is between – 30-45% i. As you increase toward 500 mg amount it drops down to mid- 20% range D. Minerals in the Human Body Chart (found IN the body - g) a. Macro vs. Micro b. This is how much you find IN the body c. Macrominerals:
i. Most prevalent mineral in the body: 1. Calcium a. Mainly bc it’s found in the bones ii. 2 nd most prevalent mineral in the body: 1. Phosphorus a. Works w/ calcium in hydroxyapatite of bones iii. 3 rd most prevalent mineral in the body: 1. Magnesium a. Part of bone structure d. Trace Minerals (Microminerals): i. Iron ii. Manganese iii. Copper iv. Iodine 1. All found in body in smaller amounts 2. Need smaller amounts from foods E. Macro/Micro Minerals Chart (how much you NEED in the body - mg) a. Macro - NEED 100 mg or more per day b. Micro - NEED <100 mg per day F. Calcium a. Most abundant mineral in the body!!! i. Found in bones and teeth (99%) ii. Found in bloodstream (1%) 1. Roles in: a. Sending nerve messages b. Blood clotting c. Regulation of heart beat 2. Blood level of calcium – net absorption (~30%) iii. RDA recommendations take into account how bioavailable/absorbable a nutrient is 1. If only need 100mg of Ca a day a. It’s already taking into account that you’re only absorbing roughly 35% of the Ca that you have to get 2. Ex: Body only needs about 350-400mg of Ca a day a. Since you only absorb ~35% - you gotta get ~1000mg G. Picture of Bones a. Deficiency symptom of Ca: i. Osteoporosis (low bone density) 1. Osteoclasts – chew away at old bone a. In overdrive and chew away a lot of bone 2. Osteoblasts – come in and lay down new bone H. Calcium In vs. Calcium Out a. Where do we get it? b. What does it do? I. Calcium Homeostasis
a. Blood level of calcium – keeping it in right range – tightly controlled b. Adequate intake of Ca rich foods: i. Blood Ca remains normal c. Dietary deficiency of blood Ca: i. Blood Ca remains normal d. Normal either way: i. Body doesn’t rely on you to get enough Ca to maintain this blood level which is necessary for life e.

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture