Week 1 Food - Food Food means a lot of things to different...

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Key Words Appetite vs. hunger Aroma vs. Smell ATP/Energy Essential nutrients Flavor Rods vs. cones Taste Food Food means a lot of things to different people. An appreciation for how food is perceived and the factors that affect the desire for food can help in understanding a number of eating problems faced by society. What is food? Definition from The Living Webster Encyclopedia Dictionary: - A nourishing substance taken into and absorbed by an organism to sustain life and enable growth and repair of tissues; more or less solid nutriments, as opposed to drink; a particular kind of nutriment; as, a breakfast food; something for consumption or use; as, food for thought. What is food? Definition from Paul Lachance: - Food equals known chemical and unknown chemicals, which may be modified by, intentional additives and/ or contaminants, which may be modified by, maturation, storage, processing, preparation, which may be modified by, digestion, absorption, metabolism the end products of which may have a good, bad or no effect on the body's cells and tissues. The above definition suggests that if a chemical enters our body it is food. Some might not agree with this broad a definition, but it is vague enough to be fairly accurate. What is food? Medically - any substance that the body can take in and assimilate that will enable it to stay alive and to grow; the carrier of nourishment Socially - a more limited number of such substances defined as acceptable by each culture The social limitations maybe part of the culture or they may be personal. Is a worm food? What if you were starving? Religious influence Some religions limit what is acceptable to eat Examples Jewish - Kosher Muslim - Halal Seventh-day Adventists - Lacto-ova -vegetarian diet Some might follow these or other dietary restrictions for other reasons. Some are vegetarian for example, for ethical reasons. Disease management Some modify what they eat because of medical advice or because of perceived health benefits. Ex: Hypertension - limit sodium Coronary heart disease - limit cholesterol Diabetes - monitor sugar Antioxidants eat chocolate and drink red wine. Why do we eat food? To obtain nutrients To satisfy hunger Habit To give pleasure To give relief from stress or disease Psychosocial reasons This is a partial list of the reasons that are often given for why people eat. For many organisms the list would stop at the first or maybe the second reason. Most animals when presented an endless source of food will only consume what they need to maintain their body weight or to satisfy other needs if they are growing. You can give a caged white rat all the food it can eat and it will maintain its normal body weight. A quick look around the campus suggests that this is not true for all humans. While many can and do maintain an ideal body weight, others weight too much and some too little.
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This note was uploaded on 04/23/2008 for the course FD SC&TE 201D taught by Professor Mangino during the Winter '08 term at Ohio State.

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Week 1 Food - Food Food means a lot of things to different...

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