NTDT200 Lecture Notes - Lecture 14: Constipation, Cystine, Phytoestrogens
12 May 2016
School
Department
Course
Professor
Document Summary
Vary with soil and water composition, and food processing. Can affect people of all ages (most common in children---failure to grow) Fda does not regulate trace minerals in supplements. Common and well coordinated to meet body needs. Excess of 1 causes a deficiency of another (interfere with work of another mineral) Too little and too much can be harmful. Switches back and forth between two forms (they can go back and forth between forms) Hemoglobin (rbc) and myoglobin (muscle cells) : most of body"s iron is found in these two proteins, they accept, carry and release oxygen. Body conserves iron (balance maintained primarily through absorption. Transferrin (iron transport protein) releases iron to transport protein. Heme iron (found in animal foods, high bioavailability) (meat, fish, poultry) Heme iron is about 10% of iron a person consumes in a day. Nonheme iron (found in plant and animal foods) Health, stage in life cycle, and iron status.
