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From Greek “protos” Major component in all animal and plant tissues Made up of hydrogen, oxygen, carbon and nitrogen Source: http://minimalpotential.files.wordpress.com/2007/11/3351.png Amino Acids › Building blocks for proteins › 20 amino acids 11 can be made in the body 9 are essential Enzymes › Facilitate and accelerate chemical reactions Antibodies › Fight illness Hemoglobin › Transport oxygen in the blood Hormones › Regulate body functions Growth and maintenance › Help grow and repair body tissues › Add structure to body tissues Source: http://library.thinkquest.org/11226/image/digest.jpg 10-35% of intake should be protein Males (18 + y/o): 59-63 grams/day Females (18 + y/o): 44-50 grams/day Calculation: › 0.8 gram/kilogram of body weight Infants needs the most protein How do you get protein in your diet? Animal products are the best source › Meat, eggs, milk, legumes, grains, vegetables Supply all essential amino acids in the correct amount for the body to use. › Animal proteins are complete Plant proteins are incomplete › Exception: soybean protein Vegetarians need to eat plant proteins in combination It is possible to get too much. › Extra calories › Kidney strain › Mineral loss › Heart disease › Cancer What foods do you eat that contain protein? › Are there some that are better than others? What is vegetarianism? Why become a vegetarian? › Scarcity of food › Religious beliefs › Concern for health or the environment › Concerns about animals Semi-vegetarian Pesco-vegetarian Lacto-ovo-vegetarian Lacto-vegetarian Ovo-vegetarian Vegan Fruitarian Lower risk of heart disease Lower risk of cancer Less likely to be overweight Not getting enough protein Osteoporosis Anemia Choosing foods to eliminate health risks