PUBH 1515 Public Health Week 7 Chapter 8

PUBH 1515 Public Health Week 7 Chapter 8 - Chapter 8 Food...

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Chapter 8 Food • The short-term effects of food on the human body are good (Satisfying), however the long-term effects of most foods consumed in the U. S. (Western Diet) are hazardous. • Food poisoning (Ptomaine) is caused by rotten food. There is a decomposition of protein matter by bacteria resulting in a toxin buildup. This causes serious GI tract symptoms, but it is rarely fatal. Typically nuts, fruits or vegetables do not cause this problem. This type of poisoning is usually due to meats. • Food infection is when a human ingests an organism and it grows and multiples in the body. It secretes exotoxins while it is alive. This generally occurs in the GI tract. The presence of the organism in the system can act as an irritant. • Disease causing bacteria require three things: 1. Warmth [40 degrees F to 140 degrees F] 2. Moisture 3. Nutrients • Bacteremia = The presence of an organism in the blood. • Septicemia = The presence of a multiplying organism in the blood. • Food Intoxication is when a human ingests the by-products of an organism. You do not have to ingest the live organism. • Endotoxins = Materials inside the cell (most fevers) cause problem when released upon the death of the organism. • Exotoxin = Toxins are released by the organism while it is alive. • Enterotoxins are poisons that act upon mucous membranes, such as the digestive tract. • Neurotoxins are poisons that act upon the cells of the nervous system. • Episodes of food poisoning cause illness in at least 1/3 of the U.S. population each year. • Between 21 million and 81 million cases of diarrhea that are treated in the U.S. each year are from food-borne illnesses. • Centers for Disease Control and Prevention (CDC) estimates that foodborne disease costs the economy between 5 billion to 22 billion dollars annually.
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• The total capita consumption of meat, poultry, and fish has increased by 16 pounds per individual in the United States in the past ten years. • The United States Department of Agriculture (USDA) estimated that an average adult
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PUBH 1515 Public Health Week 7 Chapter 8 - Chapter 8 Food...

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