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Isotopes in Nutrition

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Alina Amador

on 1 October 2012

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Transcript of Isotopes in Nutrition

Isotopes in Nutrition By Alina Amador What Is nutrition? Nutrition can be defined as food or
nourishment needed to keep an
organism growing, healthy and viable.
It also refers to the process of providing
or receiving food or other life-supporting substances. Nutritional sciences focus on basic and clinical nutrition related to health and chronic diseases, as well as community and public health nutrition. Nutritional science today... Presently, there is global issue concerning human health. People are either starving due to the lack of necessary food products, or overeating which causes obesity. This increases the importance of nutritional science research worldwide. New studies are being conducted daily, in order to help prevent greater health risks caused by the irregularities of the modern diet. Prevalence of Undernourishment in Population Obesity trends among U.S. adults Isotopes in Nutritional Science Both Stable and Unstable Isotopes are used nutritional science. However, Stable Isotopes are preferred for infants, children pregnant and lactating women, due to its lack of secondary effects. Some common uses are: determining the nutritional status of an individual, monitoring the individual’s health, detecting a deficiency in vital substances, such as vitamins and minerals and metabolic studies concerning obesity rates. Calcium Isotopes The calcium isotopes used are Calcium 40, Calcium 42, Calcium 43, Calcium 44, Calcium 46 and Calcium 48. They are mainly used for studying the calcium absorption, which if abnormal, could lead to loss of bone density (osteoporosis), colon cancer, high blood pressure and rickets, among other health conditions. How isotopes are used Most stable isotopes are tracked by the difference in weight, compared to normal compounds. Using an instrument called a mass spectrometry, which measures the mass of an isotopic compound and its surrounding substances, the particle is tracked and measured, later being compared to the mass of the surrounding and original compound, before the isotope was introduced. Unstable Isotopes however, are introduced into the blood cells and are later extracted and examined, after a period of two or three weeks. Iron Isotopes Radioactive Iron 59 and Iron 55 along with stable isotopes Iron 54, Iron 56 and Iron 58 also serve for nutritional research.They help detect iron insufficiency, the most common of all nutritional deficiencies. Such deficiency causes premature births, mental and motor dysfunction in infants, loss of memory in teens and fatigue in adults Zinc Isotopes Another type of isotopes that is commonly used in nutrition is Zinc, with Zinc 67, Zinc 68 and Zinc 70. They are used for tracing deficiency and absorption rates of zinc, mainly in children.Deficiency in zinc can cause reduced growth, lack of resistance to infection, pneumonia and diarrhea. Other Isotopes... The use of isotopes in nutritional studies does not limit to the before mentioned. Some examples are magnesium, selenium and hydrogen isotopes. Thank you for your attention! And remember, stay healthy! Resources http://www.tracesciences.com/nutritionalstudiesisotopes.htmlhttp://www.iaea.org/Publications/Magazines/Bulletin/Bull364/36405781827.pdfhttp://www.natural-health-information-centre.com/calcium.htmlhttp://www2.chemistry.msu.edu/faculty/reusch/VirtTxtJml/Spectrpy/MassSpec/masspec1.htmhttp://www.cdc.gov/nutrition/everyone/basics/vitamins/iron.htmlhttp://www.colorado.edu/physics/2000/isotopes/index.html
http://www.ehow.com/about_4614434_what-definition-nutrition.html
http://www.fao.org/hunger/en/
http://www.utoronto.ca/nutrisci/research.html
http://onlinelibrary.wiley.com/doi/10.1002/mas.20021/abstract
http://www.ncbi.nlm.nih.gov/pubmed/6339691 Mass Spectrometry device Calcium 40 Radioactive Iron 59 Selenium Isotope Zinc 68
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