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Food nutrition
1. FOOD, NUTRITION & CULTURE ‘ Feeding oneself and one’s offspring is the first concern of all living creatures’
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12. PRODUCTS OF DIGESTION (Energy Nutrients) Gastro- intestinal System CHO FATS PROTEINS GLUCOSE FRUCTOSE GALACTOSE FATTY ACIDS GLYCEROL AMINO ACIDS
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15. The Cycle of life begins with the sun! The Energy Cycle
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19. HOW MUCH FOOD DO WE NEED? The Dietary Reference Intakes ( DRIs ) are a comprehensive set of nutrient reference values for healthy populations that can be used for assessing and planning diets. The % Daily Value (% DV) can help you make informed food choices. Look for it in the Nutrition Facts table on food packages.
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Editor's Notes
Today I will talk to you about food how food, nutrition and culture are interrelated
Why indeed is the acquisition of food so. This question is ably albeit simply answered by the age old question “We are what we eat.”
If I were to ask each of you for your definition of nutrition, undoubtedly I would hear about food, energy, maintaining weight etc. For many ………………………… To the scientist………………………
I just mentioned that nutrition was the study of nutrients found in food. What is food? Read slide ……………….. Even though Bread might be universal or to be biblical, “the staff of life,” each culture has its own food. Here I have examples of various foods e.g., Mexican food, ackee which is very Jamaican, pearbush buds which is very Turks and Caicos, even though I was recently told by someone from home it was being sold in the DC area as Yuppy food!
We have already established that we eat food to get nutrients. Read slide………………….
These 6 classes are divided into 2 groups. The organic nutrients and inorganic nutrients.
Three of the 4 classes of organic nutrients are capable of supplying energy!
Here are some additional facts about food and nutrients
Even though it is recommended that we select foods provide adequate amounts of nutrients and energy, as humans, when we decide to eat we think of eating food and not nutrients. The pictures that we conjure up in our minds are those of various foods. There are many factors that influence food choices. In most instance Nutritional value is not the most important. This explains, in part, why it is difficult to change a persons dietary patterns without understanding the person!
Once consumed, foods need to be transformed into am medium that enables the body to extract the fuel and nutrients from it. Digestion …………………………………………………………. In unicellular animals like the amoeba it is relatively simple………………………….. In complex, multi cellular animals like ourselves, it is much more complicated ……………………..
Let us talk a little about energy! The energy found in foods is measured in units of heat called calories! (Read Slide)
Lets examine where plants get their energy! Read slide
So, The energy cycle begins with the sun. It is much more complicated than the sun simply handing us a slice of bread. Indeed, as humans sit at the top of the food chain. Hence, the sun’s energy goes through a series of transformations before it is incorporated into foods consumed by us. The cycle here shows a predominantly marine cycle beginning with the sun impacting unicellular plankton until we arrive at fish that are eaten by birds or directly by man.
What constitutes a nutritious diet? Here are the ABC’s of a nutritious diet. These are expanded upon in Guide lines for Americans.
Of course, we pay all of the attention to nutrition in an effort to optimize our health!
In keeping with the current epidemic of chronic diseases such as heart diseases, many recommendations to reduce disease risk are diet related since diet is a risk factor for many of the diseases that are listed in the 10 leading causes of death in the USA. Read slide
Information to help us plan healthy means.
To check if a food is a good source of a nutrient or to compare similar foods: Look at the % Daily Value (%DV) column to see whether a food is high or low in saturated fat, cholesterol, sodium. If you want to consume more of a nutrient (e.g., Calcium), choose foods with a higher %DV. Foods with 5%DV or less contribute a small amount of that nutrient. Those with 20% or more contribute a large amount. Nutrition Facts serving sizes may differ from Food Guide Pyramid (e.g., 2 ozs of dry macaroni yields about 1 cup cooked, or two [½ cup] Pyramid servings).
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