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Nutrition For Individual Needs / Food Safety Chapter 10, pages 278-281 & Chapter 11, pages 303-308
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Vegetarian Diets A vegetarian is a person who eats mostly or only plant-based foods. The various types of vegetarians include: – Vegans (the strictest form) who eat only plant-based foods – Lacto vegetarians who add dairy foods to their diets. – Ovo vegetarians who include eggs in their diets – Lacto-ovo vegetarians who also eat dairy foods and eggs.
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Vegetarian Diets Some people choose a meatless diet because they feel it is healthier. Others choose to be vegetarians because of religious, cultural, or economic reasons, or because they simply prefer vegetarian foods. An advantage of a vegetarian eating style are that plant-based foods tend to be lower in saturated fat and cholesterol, and higher in fiber than most animal- based diets. As a result, it may reduce the risk of cardiovascular disease & some types of cancer.
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Vegetarian Diets Drawbacks of a vegetarian eating style are that plant-based foods tend to be lower in certain nutrients, such as iron, calcium, zinc, and some B vitamins. Some vegetarians may need to take dietary supplements to obtain all the nutrients.
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Health Conditions The foods people eat can trigger certain diseases or health conditions. People with these conditions may need to avoid or limit certain foods in order to avoid health problems.
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Health Conditions Some health conditions that can be affected are: 1.Diabetes They have to monitor their blood sugar level and have to monitor the amount of carbohydrates they consume in their food and drink. 2. Food allergies They must avoid food or foods with ingredients they are allergic to. 3. Lactose intolerance They must consume smaller portions of milk, cheese or yogurt; or take lactase enzyme when they eat dairy foods.
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Health Conditions 4. Celiac disease (gluten intolerance) They need to avoid foods that are high in gluten which is a protein found in wheat, rye, and barley, and anything made from them such as bread, pasta and beer 5. High blood pressure They need to limit their intake of salt which can raise blood pressure. 6.High cholesterol They may need to reduce their intake of saturated fats and trans fats which could increase cholesterol production.
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Nutrition for Athletes No one food or nutrient builds muscle or increases speed The best diet is balanced, moderate, and varied. Athletic training does not alter the body’s requirement for protein, vitamins, or minerals. The main difference is an increased need for calories which should be increased with the use of nutrient- dense foods. It also requires an increase in fluids to decrease the risk of dehydration and loss of electrolytes (minerals that become electrically charged in solution).
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Nutrition for Athletes “Making Weight” In some sports, maintaining a certain body weight is important, but it needs to be done healthfully. Athletes trying to lose weight may try fasting, crash dieting, or sweating off extra weight, which can cause dehydration and compromise performance.
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Nutrition for Athletes Athletes trying to gain weight need to eat in a healthful way, using nutrient dense foods, and exercise to build muscle mass. Slow, steady weight gain, no more than 2 pounds per week, is best Using hormones such as steroids to increase muscle mass is not healthy and may stunt growth and damage the body’s reproductive system.
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Nutrition for Athletes Pre-competition Meals Meals should be consumed 3 to 4 hours before competition to allow the stomach to empty, yet keep the athlete from being hungry during competition. Meals should be high in carbohydrates and low in fat and protein. Pre-hydration is also important, especially while competing in hot weather conditions. Carbohydrate loading (storing extra glycogen in the muscle) may benefit athletes participating in endurance sports, but not advised for teen athletes.
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Nutrition for Athletes Performance Enhancers Substances that boost athletic performance. Many of these pose health risks, especially for teens. Many are illegal or banned under the rules of many sports organizations
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Nutrition for Athletes 1.Anabolic Steroids They have the same effect as male hormones, and are associated with many health risks 2. Androstenedione A weak steroid with the same health risks as anabolic steroids
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Nutrition for Athletes 3. Creatine A compound which helps release energy and reduce muscle fatigue. It can hurt athletic performance due to side effects which include cramps and nausea. High doses may damage the heart, liver, and kidneys. 4. Energy Drinks They contain high amounts of caffeine which increases heart rate. Caffeine may cause your body to lose more fluids and cause dehydration.
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Nutrient Supplements Pills, powders, liquids, and other nonfood forms of nutrients that may be beneficial and can provide dependable sources of some vitamins and minerals under some health conditions or certain stages of life (elderly or pregnant women). Pregnant women may need more iron, calcium and folic acid.
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Nutrient Supplements The elderly may require more of certain vitamins (B6 & vitamin D) due to not being able to process and synthesize vital nutrients as efficiently as younger people. Also, some medications may interfere with nutrient absorption.
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Nutrient Supplements Megadoses, or very large amounts of nutrient supplements, are potentially dangerous. Excess amounts of fat- soluble vitamins A, D, E and K stay in the blood and become toxic. Too much vitamin A can lead to liver damage, hair loss, blurred vision, and headaches. Excess amounts of vitamin C puts a heavy strain on the kidneys.
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Foodborne Illness
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Foodborne illness, or food poisoning, often comes from eating food that has come in contact with a contaminant (any substance that spoils or infects). In most cases, the contaminant is a bacteria, parasite or virus. About 76 million Americans become ill as a result of foodborne illnesses each year.
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Foodborne Illness Common causes include: 1.Animals raised or caught for food may harbor disease organisms in their tissues If meat or milk from such an animal is eaten without being thoroughly cooked or pasteurized treated by a process of heating to destroy or slow the growth of pathogens), the organisms may cause illness.
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Foodborne Illness 2. Food may be contaminated with bacteria spread from an infected person or animal
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Foodborne Illness Some common symptoms of foodborne illness include: – Cramps – Diarrhea – nausea and vomiting – Fever – Fluids lost through vomiting or diarrhea can result in dehydration
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Minimizing Risks Bacteria need three conditions for growth: – Nutrients – Moisture – Warmth Bacteria grow rapidly between 40 degrees and 140 degrees Fahrenheit. At these temperatures, bacteria can double in number every 30 minutes.
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Minimizing Risks Six Critical control points that can limit foodborne illness include: 1.Buying Do not buy or eat food with damaged packaging, dents, cracks, bulging lids, or popped safety buttons. Make sure meat and poultry products are refrigerated when purchased. Keep packages of raw meat & poultry separate from other foods. Refrigerate foods that are perishable (liable to spoil) within one hour.
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Minimizing Risks 2. Home storage Refrigerate or freeze meat or poultry immediately. Wash your hands before and after handling any raw meat, poultry or seafood. Store foods according to package instructions.
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Minimizing Risks 3.Pre-preparation Thaw meat in the refrigerator, never at room temperature. Avoid cross- contamination (spreading of bacteria from one food to another), by washing your hands before and after handling foods. Wash work surfaces and utensils immediately after use. Do not let juices from raw meat, poultry, or seafood come in contact with foods that will be eaten raw.
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Minimizing Risks 4. Cooking Always cook food thoroughly. Use a meat thermometer to determine whether food has reached a safe internal temperature. Cook food thoroughly, then refrigerate and reheat as necessary.
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Minimizing Risks 5.Serving Keep hot foods hot (above 160°F) and cold foods cold (below 40°F). Never leave perishable foods at room temperature for more than 2 hours.
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Minimizing Risks 6. Handling Leftovers Refrigerate leftovers within 2 hours of cooking. Put dates on containers before refrigerating. When reheating leftovers, reheat thoroughly. Throw away suspicious foods without tasting them. Remember if in doubt, throw it out!
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Food Allergies A condition in which the body’s immune system reacts to substances in some food. Symptoms include: – Rash or hives – Itchiness of the skin – Vomiting – Diarrhea or abdominal pain – Hayfever like symptoms of the respiratory tract – Constriction of the airway which may result in death
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Food Allergies Foods that cause most food allergies include: – Milk – Eggs – Peanuts and tree nuts – Wheat – Soy – Fish and shellfish – Chicken – Tomatoes Some sulfites, or food additives that help preserve food, and certain nutrients, such as monosodium glutamate (MSG), can also cause allergic reactions in some people.
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Food Intolerance A negative reaction to a food that doesn’t involve the body’s immune system or to food poisoning. It is more common than a food allergy
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Food Intolerance It is sometimes caused by irritants such as food additives. It may also be associated with certain foods, such as green peppers or fried foods. It can also be also be caused by an inborn or acquired defect, such as the inability to digest lactose, a sugar found in milk (lactose intolerance).
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