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Ch. 5 lesson 1

Explore the reasons why we eat and the factors that influence our food choices. Learn about the body's physical need for nutrients and the mind's desire for food. Understand the importance of good nutrition for overall health.

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Ch. 5 lesson 1

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  1. Ch. 5 lesson 1 • Terms • Why do you eat? • Body’s physical need for food • Mind’s desire for food • Things that influence food choices • Importance of good nutrition

  2. Why do you eat? • Body needs nutrients (growth, repair, energy) • Physical need (hunger) • Psychological desire (appetite) • Recognizing the difference between the two helps you make healthful food choices

  3. Physical need for food • Most basic reason for eating is physical • Hunger protects you from starvation • Empty stomach = walls contract, stimulating nerve endings • Nerve endings send signal to brain (food supply needs replenishing) • Once you eat, stomach walls are stretched and nerve endings are no longer stimulated • You feel “full”

  4. Desire for food • “Make room for dessert” • Eat in response to smell of fresh baked cookies • Social eating • Appetite is a desire rather than a need and is a learned response • Appetite is influenced by your environment and emotions

  5. Things that influence food choices • Environment Culture - Where you live (holidays), ethnic background, religious beliefs. Young and old. Family – What you ate as a child, what you learned to like and dislike, and when you ate meals.

  6. Things that influence food choices (cont) • Environment (cont) Friends – Tried new foods at their homes or tasted different foods at parties. • Advertising – Television, magazines, billboards.

  7. Things that influence food choices (cont) • Time and money – Busy lifestyles = rely more on foods you can cook and eat quickly (microwavable, fast foods) • Emotions – Head to refrigerator because you are bored? Eat more or less when stressed, frustrated, or depressed? May result in overeating or not eating enough.

  8. Importance of good nutrition • Unhealthy eating habits - linked to 60% of leading causes of death in the U.S. (heart disease, stroke, cancer) • Unable to distinguish between appetite and hunger. They eat past point of feeling full because appetite continues after hunger has been satisfied. • Many foods that stimulate appetite are high in fat and calories.

  9. Did you know? • Average child sees more than 20,000 commercials each year • By age 21, the average viewer will have seen 1 million TV commercials • 90% of food ads on Saturday morning are for sugary cereals, candy, salty snacks, fatty foods, and other junk food

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