Water, Vitamins & Minerals Fall 2023 PDF
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Uploaded by JubilantDiopside1201
University of Jordan
2023
Dr.Hala.Al-Nawaiseh
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Summary
This document contains lecture notes on vitamins, minerals, and water. It explains the importance of various vitamins and minerals like vitamin A, D, and C. It also mentions food sources rich in these nutrients.
Full Transcript
Water, Vitamins & Minerals Dr.Hala.Al-Nawaiseh Fall 2023 Vitamins Certain vitamins and minerals are needed for the body to function. ◦ 13 vitamins ◦ 22 minerals Two types of vitamins ◦ Water-soluble ◦ Fat-soluble Fat-Soluble vitamins Vitamin A, D, E and K Excess is stored...
Water, Vitamins & Minerals Dr.Hala.Al-Nawaiseh Fall 2023 Vitamins Certain vitamins and minerals are needed for the body to function. ◦ 13 vitamins ◦ 22 minerals Two types of vitamins ◦ Water-soluble ◦ Fat-soluble Fat-Soluble vitamins Vitamin A, D, E and K Excess is stored in the liver and in body fat ◦ It is possible to build up to a toxic level Vitamin A (Retinol) Beta-carotene is converted into vitamin A Vitamin A: ◦ Promotes good vision ◦ Promotes healthy skin ◦ Helps with growth and maintenance of bones, teeth, and cell structure RDA: 900 micrograms for males; 700 micrograms for females Too much vitamin A May turn your skin orange May cause fatigue, weakness, severe headache, blurred vision, hair loss and joint pain. Toxicity: ◦ May cause severe liver or brain damage ◦ Birth defects Too little vitamin A Maycause night blindness Lowered immune system Foods rich in vitamin A Foods Carotenoids ◦ Only animal products ◦ Orange/Yellow fruits Liver and vegetables Eggs Cantaloupes, carrots, sweet potatoes, winter Milk, butter and cheese squash ◦ Leafy green vegetables Spinach, broccoli Vitamin D – “The Sunshine Vitamin” Essential for building and maintaining bones and teeth Responsible for absorption and utilization of calcium Other health benefits: ◦ May boost immune system ◦ May also help decrease certain cancers RDA: 5 micrograms until age 50 10 micrograms / day until 70; 15 mcg 70+ Too little vitamin D Vitamin D deficiency has been in the news a lot lately. Deficiency may occur from: ◦ Inadequate diet Vegetarianism, lactose intolerance, milk allergy ◦ Body unable to absorb needed vitamin D ◦ Limited exposure to sunlight Vitamin D Deficiency Maylead to osteomalacia and/or osteoporosis Getting vitamin D Sunexposure for 10 minutes a day Foods: ◦ Fortified milk ◦ Tuna ◦ Salmon ◦ May need a supplement Check with doctor first though Vitamin E Important to red blood cells, muscles and other tissues Deficiency is rare Toxicity is rare ◦ But Vitamin E acts as a blood thinner Foods: ◦ Vegetable oils, salad dressings, whole grain cereals, green leafy vegetables, nuts, seeds, peanut butter and wheat germ. Vitamin K Important for blood clotting ◦ Also has a role for bone health Mostly made in the intestines Foods: ◦ Turnip greens, cauliflower, spinach, liver, broccoli, kale and cabbage Water-Soluble Vitamins Vitamins Bs and C Eight B vitamins: ◦ Thiamin (B-1) ◦ Riboflavin (B-2) ◦ Niacin (B-3) ◦ Pyridoxine (B-4) ◦ Cobalamin (B-12) ◦ Folic acid ◦ Pantothenic acid ◦ Biotin Thiamin or B-1 Helps to convert carbohydrates to energy Deficiency: ◦ Fatigue, nausea, depression, nerve damage Foods: ◦ Beef, liver, peas, seeds, legumes, whole-grain products, and oatmeal Riboflavin or B-2 Key to metabolism and red blood cells Deficiency: ◦ Dry, scaly skin Foods: ◦ Milk, yogurt, cheese, whole-grain breads, green leafy vegetables, meat, and eggs Niacin or B-3 Also involved with energy production Also helps with skin, nerves and digestive system Deficiency: ◦ Rare but causes: diarrhea, dermatitis, dementia and death Foods: ◦ Meat, poultry, liver, eggs, brown rice, baked potatoes, fish, milk, and whole-grain foods Pyridoxine or B-6 Involved in chemical reactions of proteins and amino acids Deficiency: ◦ Skin changes, dementia, nervous system disorders and anemia Foods: ◦ Lean meats, fish, legumes, green leafy vegetables, raisins, corn, bananas, mangos Cobalamin or B-12 Helps with nervous system, red blood cells and DNA synthesis Deficiency: ◦ Nervous system disorders and pernicious anemia Foods: ◦ Only found in animal products Meat, fish, poultry, eggs, milk products and clams Folic acid (Folacin, Folate) Key role in red blood cell formation and cell division Deficiency: ◦ Anemia, digestive disorders Foods: ◦ Leafy, dark green vegetables ◦ Also found in liver, beans, peas, oranges, avocados Pantothenic Acid and Biotin Help with metabolism and formation of some hormones Deficiencies are rare Foods: ◦ Almost any food, plant-based or animal-based Vitamin C Important to bone health, blood vessel health, cell structure and absorption of iron Deficiency: ◦ Rare Too much vitamin C Foods: ◦ Melons, berries, tomatoes, potatoes, broccoli, fortified juices, kiwi, mangos, yellow peppers and citrus fruits Minerals 22minerals are needed by the body Two categories: ◦ Major Include calcium, chloride, magnesium, phosphorus, potassium, sodium, and sulfur ◦ Trace Include iron, zinc, iodine, selenium, copper, manganese, fluoride, chromium, molybdenum, arsenic, nickel, silicon, boron and cobalt Sodium What does sodium do for you? ◦ Helps maintain fluid balance ◦ Helps transmit nerve impulses ◦ Influences contraction and relaxation of muscles Sodium & Health Too much sodium ◦ Causes high blood pressure ◦ May lead to fluid retention The human body requires about 500 mg of sodium per day, while the average American usually ingests between 2,300- 6,900 mg each day. It is recommended to stay in a range of 1,500 to 2,400 mg / day. Where are you getting sodium? www.mayoclinic.com Reducing sodium in your diet Eat more fresh foods Eat less processed foods Look for low-sodium products Limit the salt you add to foods Experiment with other seasonings Use salt substitutes with caution Calcium The most abundant mineral in your body ◦ 99% is stored in the bones Known for bone health How much do you need? ◦ Males 19-50 years old: 1,000 mg / day ◦ Females 19-50 years old: 1,000 mg / day Calcium & Foods Dairy products, fortified juices, sardines Food Calcium Yogurt, plain (low-fat) 1 cup - 415 mg Yogurt, flavored (low-fat) 1 cup – 345 mg Milk, skim 1 cup – 302 mg Milk, 1-2% 1 cup – 300 mg Ice cream ½ cup – 88 mg Broccoli, cooked ½ cup – 68 mg Salmon, canned 3 oz – 165 mg Fortified orange juice 8 oz – 300 mg Iron Irondeficiency is the most widespread vitamin or mineral deficiency in the world. ◦ 70% of your body’s iron is in your hemoglobin ◦ Too little iron = too little oxygen Iron & Foods Heme iron: ◦ Found in animal products Red meats, liver, poultry and eggs Non-heme iron: ◦ Found in plant products Beans, nuts, seeds, dried fruits, fortified breads and cereals Iron supplements Check with your doctor first. High risk groups: ◦ Strict vegetarians ◦ Those who do not eat a balanced diet ◦ Those who are over 60 ◦ Smokers ◦ Those who suffer from food allergies, intolerances Water Essential for life ◦ It is possible to live without food than without water. Watermakes up about 45-75% of your body weight Why is water important? Aidswith transport Mechanical functions Helps to break substances down Helps to maintain body temperature/pH How much water do you need? Adequate intake: ◦ Ideally 80% of water should coming from drinking fluids. 20% of water intake should come from food