{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

6.1_Human_nutrition_III - In this presentation we will look...

Info icon This preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
In this presentation, we will look at our final topic in human nutrition dealing with micronutrients- vitamins and minerals. 1
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Here’s Lucille Ball elaborating on the benefits of micronutrients : http://www.youtube.com/watch?v=x7PdS8t4HP4&feature=related 2
Image of page 2
We will build a conceptual foundation on the role of nutrients in the human diet and then focus on two examples, vitamin D and iron, which have special relevance to those in this class. Finally, we will look at factors that may lead to malnourishment even in the face of food plenty. 3
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
This is the basic model of nutrition: heterotrophic organisms (those that derive their nutrition from other organisms) eat to provide energy and matter needed to grow and function. In this presentation, we will focus on the third point- the essential nutrients that we must obtain via the diet. 4
Image of page 4
The essential nutrients are often categorized as macro or micro depending on the relative amounts that we need. So nutrients like macromolecules of amino acids and fatty acids that we can’t synthesize are ones that we consume in larger quantities than other molecules that we need in very small amounts like the vitamins and some minerals like zinc. In reality, the amount of each nutrient needed varies a lot depending on what the nutrient is and the specific needs of the individual. For example, micronutrient needs are often listed as recommended dietary allowances- the RDA; which was developed as a guideline to maintain good nutrition during World War II during a time of food rationing and the more recently developed nutritional recommendations called Reference Daily Intake (RDI) or Dietary Reference Intakes (DRI) which are daily amounts of specific nutrients thought to meet the needs of the majority of people in a given area such as the US. Useful Internet resources include the USDA Food and Nutrition Information Center http://fnic.nal.usda.gov which provides a plethora of governmental reports and interactive tools regarding nutritional recommendation, food content, etc. and the Linus Pauling Institute http://lpi.oregonstate.edu/infocenter which has unbiased information about commonly used phytochemicals as well as traditional vitamins and minerals. In spite of the constant advertising by the dietary supplement and food fortification industries, it’s important to remember that all of our essential nutrients can be obtained by a balanced and diverse diet and a lifestyle that includes some sunlight exposure. An example of how diverse diets support adequate nutrition in terms of macronutrients is exemplified by the following example. 5
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Here’s a classic example of how diet composition is important in providing essential macro-nutrients. In this case, the essential amino acids are not provided in adequate amounts with either corn or beans alone; however, with the combination of bean dishes and corn tortillas, the meal provides for our essential amino requirements.
Image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern