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Dana Hrnčířová Dpt. of Nutrition, 3rd Faculty of Medicine, Charles University in Prague
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In general, people who exclude meat, poultry, fish, and animal- derived foods from their diets. A wide diversity of dietary practices
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Vegans (total vegetarians) Lacto-vegetarians Ovo-vegetarians Lacto-ovo- vegetarians Pescaterians Pollo-vegetarians Semi-vegetarian (flexitarians) Raw vegan (raw food diet)
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USA 2012 National Poll 4% of adults are vegetarians/vegans (approx. 9 million) 1% are vegans (approx. 2 millions) No much difference between male, female, region, or age for actual vegetarians (Harris Interactive poll by the Vegetarian Resource Group) Veg. Statistics - European vegetarian Union http://www.euroveg.eu/lang/en/info/howmany.php
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Environmental/Ecological Animal welfare Religious Economical Health Family lifestyle
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Meat replacements: products made to look and taste like meat, fish, poultry Tofu: a curd made from soybean Tempeh: a fermented soybean food Textured soy protein (TSP), soy meat: processed soybeans TOFUTEMPEH TSP
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Ischemic Heart Disease Hypertension Diabetes Obesity Cancer Osteoporosis Diverticular Disease Gallstones Rheumatoid Arthritis
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Lower risk of death Adjustment for BMI, smoking habits, social calss Incidence 24% lower in lifelong vegetarians Incidence 57% lower in lifelong vegans Lower TCh, LDL-Ch Higher intakes of fiber, nuts, soy, and plant sterols Lower intakes of SFA Vegetarians 50-100% more fiber than non-vegetarians
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Lower rates of hypertension: Non-vegetarians > vegetarians > vegans Lower blood pressure Non-vegetarians > vegetarians diet or lower BMI? Beneficial nutrients Potassium, magnesium, antioxidants, fiber, fat 5-10 servings of fruits and vegetables significantly lowers BP
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Positive associations between intakes of red meat and processed meat and risk of diabetes after adjusting for BMI, total energy intake, exercise … Beneficial nutrients: vegetables, whole-grain foods, legumes, and nuts diets rich in whole-grain foods are associated with improved insulin sensitivity
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Vegetarians maintain lower BMI than non-vegetarians Non-vegetarians > vegetarians > vegans (BMI) Lower weight correlates with high intakes of fiber and low intakes of fat
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Significantly lower rates of cancer nondependent on smoking (Colorectal and prostate cancer) Obesity is significant risk factor for cancer; meat? Cancer-protective dietary factors: Fiber, C, carotenoids, flavonoids, lycopene fruits, vegetables (lung, mouth, esophagus, stomach) Legumes (prostate, stomach) Soy isoflavones (breast) ???
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Dairy products, green leafy vegetables, and calcium- fortified plant foods – calcium for vegetarians no differences in bone mineral density between omnivores and lacto-ovo-vegetarians Increased intake of friuts and vegetables (K, Mg) - positive effect on the calcium economy High protein intake, especially animal protein, can produce increased calciuria Low protein intakes may increase the risk of low bone integrity
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Protein quality Vitamin B 12 Omega-3 Fatty Acids Vitamin D Calcium Iron Zinc Protein
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The combination of plant protein foods which when eaten together provide all the essential amino acids. E.g. combinaton of legumes and grains
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The more restricted the vegetarian diet, the greater the challenge to achieve a nutritionally adequate diet. The goal: consume a variety of foods to obtain all of the needed nutrients. Nutritional consciousness (Fe, vitamin C, B12, …)
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Foods 1serving Number of Servings/day Fruits ½ cup fresh/canned/frozen3–4 Vegetables ½ cup cooked/1 cup raw4–6 Whole Grains 1 slice whole-grain bread 1 cup whole-grain cereal, ½ cup cooked rice/pasta 5–8 Legumes ½ cup cooked legumes ½ cup tofu 1 cup soy milk 3–6 Nuts, Seeds ¼ cup nuts or seeds1–3 Plant Oils 1 teaspoonup to 5 Eggs 1 egg 4–6 per week Dairy 1 cup milk/yogurt ¼ cup cheese ½ cup cottage cheese 1–3 Oldways 2013
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Dietary guidelines for Americans 2010 Position paper of American Dietetic Association 2009 American Heart Association Physicians Committee for Responsible Medicine - Dietary Guidelines Goals and Recommendations Harvard School of Public Health Up-to-date research
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