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Questions and Answers
What do people often say to children to encourage them to eat their vegetables?
What do people often say to children to encourage them to eat their vegetables?
Eat your vegetables if you expect to get dessert or Finish that fish. People in Africa are starving!
What is the significance of learning about foods and nutrition?
What is the significance of learning about foods and nutrition?
It is important to learn about foods and nutrition because it enables individuals to make informed choices about their diet, which can impact their overall health and well-being.
What are the factors that influence food choices?
What are the factors that influence food choices?
Food advertising, peers, income, moods, personal beliefs, and cultural background
Who were the 'gatekeepers' of your food when you were an infant and a young child?
Who were the 'gatekeepers' of your food when you were an infant and a young child?
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Why is food more than just something to eat?
Why is food more than just something to eat?
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What are the primary ways COVID-19 can spread?
What are the primary ways COVID-19 can spread?
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What was declared by the World Health Organization in January 2020 regarding COVID-19?
What was declared by the World Health Organization in January 2020 regarding COVID-19?
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Why do people need to learn about nutrition?
Why do people need to learn about nutrition?
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What motivates people to change their eating habits?
What motivates people to change their eating habits?
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What is the relationship between COVID-19 and nutritional health?
What is the relationship between COVID-19 and nutritional health?
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What are some common ingredients in traditional Mexican cuisine?
What are some common ingredients in traditional Mexican cuisine?
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What are the six classes of nutrients?
What are the six classes of nutrients?
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What are some nutritional benefits of the traditional Mexican diet?
What are some nutritional benefits of the traditional Mexican diet?
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What is a phytochemical?
What is a phytochemical?
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What is an essential nutrient?
What is an essential nutrient?
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What is the significance of nopalitos in Mexican cuisine?
What is the significance of nopalitos in Mexican cuisine?
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Why is it important to care about one's diet?
Why is it important to care about one's diet?
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What is a key factor in making healthy food choices?
What is a key factor in making healthy food choices?
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What are the leading causes of death in the United States, and how do poor eating habits contribute to these causes?
What are the leading causes of death in the United States, and how do poor eating habits contribute to these causes?
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What is the importance of consuming a healthy diet in relation to infectious diseases?
What is the importance of consuming a healthy diet in relation to infectious diseases?
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What is a major objective of this textbook, and how does it aim to achieve this objective?
What is a major objective of this textbook, and how does it aim to achieve this objective?
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What is nutrition, and what field of study is it related to?
What is nutrition, and what field of study is it related to?
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What are the six classes of nutrients, and what do they consist of?
What are the six classes of nutrients, and what do they consist of?
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Why is it important to understand the composition of healthy diets?
Why is it important to understand the composition of healthy diets?
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What is the significance of managing one's diet, and what role does personal responsibility play?
What is the significance of managing one's diet, and what role does personal responsibility play?
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What is the relationship between diet and chronic health problems?
What is the relationship between diet and chronic health problems?
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What is the role of chemistry in understanding nutrition?
What is the role of chemistry in understanding nutrition?
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What is the significance of the 'Concept Checkpoints' and multiple-choice questions in the textbook?
What is the significance of the 'Concept Checkpoints' and multiple-choice questions in the textbook?
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What is the primary function of carbohydrates in the body according to Table 1.1?
What is the primary function of carbohydrates in the body according to Table 1.1?
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What is the term for the total of all chemical processes that occur in living cells?
What is the term for the total of all chemical processes that occur in living cells?
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What is the primary function of proteins in the body according to Table 1.1?
What is the primary function of proteins in the body according to Table 1.1?
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What percentage of nutrients is vitamins in the human body?
What percentage of nutrients is vitamins in the human body?
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What is the term for a nutrient that must be supplied by food because the body does not synthesize it or make enough to meet its needs?
What is the term for a nutrient that must be supplied by food because the body does not synthesize it or make enough to meet its needs?
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What is the most essential nutrient?
What is the most essential nutrient?
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What group of people is at a higher risk of developing severe COVID-19?
What group of people is at a higher risk of developing severe COVID-19?
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What is the study of how the body functions?
What is the study of how the body functions?
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What chapter provides information about the functions of carbohydrates in the body?
What chapter provides information about the functions of carbohydrates in the body?
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What is the term for the process of making nutrients in the body?
What is the term for the process of making nutrients in the body?
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What are some phytochemicals that are toxic or can interfere with the absorption of nutrients?
What are some phytochemicals that are toxic or can interfere with the absorption of nutrients?
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What are carotenoids, and what are their possible health benefits?
What are carotenoids, and what are their possible health benefits?
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What is the biological effect of isothiocyanates and indoles, and in which foods can they be found?
What is the biological effect of isothiocyanates and indoles, and in which foods can they be found?
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What is one way to identify an essential nutrient?
What is one way to identify an essential nutrient?
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What are some signs of scurvy, the vitamin C deficiency disease?
What are some signs of scurvy, the vitamin C deficiency disease?
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What are some rich food sources of quercetin, a phenolic phytochemical?
What are some rich food sources of quercetin, a phenolic phytochemical?
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What is one of the physiological roles of vitamin C in the body?
What is one of the physiological roles of vitamin C in the body?
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What is the main effect of capsaicinoids, and in which foods can they be found?
What is the main effect of capsaicinoids, and in which foods can they be found?
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What are phytochemicals?
What are phytochemicals?
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What is the purpose of the Dietary Supplement Health and Education Act of 1994 (DSHEA)?
What is the purpose of the Dietary Supplement Health and Education Act of 1994 (DSHEA)?
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What are fructooligosaccharides, and what is their possible health benefit?
What are fructooligosaccharides, and what is their possible health benefit?
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What is an example of a phytochemical?
What is an example of a phytochemical?
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What is the role of antioxidants in the body?
What is the role of antioxidants in the body?
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What is the significance of scientific research on phytochemicals?
What is the significance of scientific research on phytochemicals?
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What is the significance of optimal nutritional status in relation to infectious diseases?
What is the significance of optimal nutritional status in relation to infectious diseases?
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What are some examples of dietary supplements that may have beneficial effects on health?
What are some examples of dietary supplements that may have beneficial effects on health?
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Where can information about specific dietary supplements, including those that contain phytochemicals, be found?
Where can information about specific dietary supplements, including those that contain phytochemicals, be found?
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What happens when the missing essential nutrient is added back to the diet?
What happens when the missing essential nutrient is added back to the diet?
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What is the difference between signs and symptoms of a disease?
What is the difference between signs and symptoms of a disease?
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What is the purpose of Table 1.2 in the chapter?
What is the purpose of Table 1.2 in the chapter?
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Study Notes
Importance of Nutrition
- Nutrition is the scientific study of nutrients, chemicals necessary for proper body functioning, and how the body uses them.
- Understanding nutrition requires learning about chemistry and human physiology.
- Nutrition is essential for maintaining health and preventing diseases, such as heart disease, some types of cancer, stroke, and type 2 diabetes.
- A healthy diet can help prevent chronic health problems, especially when started at a young age.
Factors Influencing Food Choices
- Numerous factors influence food choices, including:
- Family's ethnic and cultural background
- Friends and food advertising
- Income
- Moods
- Personal beliefs
- Food choices can have social, economic, ceremonial, or religious significance.
Nutrients and Their Roles
- There are six classes of nutrients: carbohydrates, fats and other lipids, proteins, vitamins, minerals, and water.
- Each nutrient has a specific role in the body, such as:
- Carbohydrates: source of energy
- Lipids: source of energy, cellular development, and regulation of body processes
- Proteins: production of structural components, cellular development, and regulation of body processes
- Vitamins: regulation of body processes, maintenance of immune function, and protection against disease
- Minerals: regulation of body processes, formation of chemical messengers, and physical growth and development
- Water: maintenance of fluid balance, regulation of body temperature, elimination of waste, and transportation of substances
Essential Nutrients
- Essential nutrients must be supplied by food because the body does not synthesize them or make enough to meet its needs.
- About 50 nutrients are dietary essentials, including vitamins, minerals, and amino acids.
- Water is the most essential nutrient.
Phytochemicals
- Phytochemicals are nonnutrients found in plants that may have healthful benefits.
- Examples of phytochemicals include antioxidants, such as caffein, and potentially toxic compounds like nicotine.
- Rich food sources of phytochemicals include fruits, vegetables, and whole grains.
COVID-19 and Nutrition
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Malnourished individuals, older adults, and persons with preexisting conditions are at higher risk of developing severe COVID-19.
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A healthy diet may help prevent infectious diseases, such as COVID-19, and support recovery from illness.### Phytochemicals and Their Food Sources
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Carotenoids: antioxidant activity, may reduce risk of macular degeneration; found in orange, red, yellow fruits and vegetables, egg yolks, and liver (alpha-carotene, beta-carotene, lutein, lycopene, zeaxanthin)
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Phenolics: antioxidant activity, may inhibit cancer growth, may reduce risk of heart disease; found in apples, tea, red wine, onions, olives, raspberries, and cocoa (quercetin)
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Catechins: found in tea, chocolate, plums, apples, berries, and pecans
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Anthocyanins: found in red, blue, or purple fruits and vegetables
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Resveratrol: found in red wine, purple grapes and grape juice, and dark chocolate
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Isoflavonoids: found in soybeans and other legumes
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Lignans: found in flaxseed, berries, whole grains, bran, and nuts
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Ellagic acid: found in raspberries, strawberries, cranberries, walnuts, and pomegranates
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Organosulfides: antioxidant effects, may improve immune system functioning and reduce the risk of heart disease; found in garlic, onions, and cruciferous vegetables (broccoli, cauliflower, cabbage, kale, bok choy, collard and mustard greens)
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Alkaloids: stimulant effects; found in coffee, tea, kola nuts, and cocoa (caffeine), and chili peppers (capsaicin)
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Fructooligosaccharides: may stimulate the growth of beneficial bacteria in the human intestinal tract; found in onions, bananas, asparagus, and wheat
Dietary Supplements
- Definition: a product (excluding tobacco) that contains a vitamin, a mineral, an herb or other plant product, an amino acid, or a dietary substance that supplements the diet by increasing total intake
- Examples: vitamin pills, herbal extracts
- Regulation: Dietary Supplement Health and Education Act of 1994 (DSHEA) allows manufacturers to classify nutrient supplements and certain herbal products as foods
- Effects: some dietary supplements have beneficial effects on health, but many are not helpful and may even be harmful
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Test your knowledge on the importance of nutrition, factors influencing food choices, leading causes of death, and the six classes of nutrients.