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Research paper example essay prompt: Calcium In Diet - 513 words
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Calcium In Diet Many people choose to avoid milk and other dairy products because they contain fat, cholesterol, allergenic proteins, lactose, and frequently traces of contamination. Milk is also linked to juvenile-onset diabetes, and other serious conditions. Happily, there are plenty of other, safer and more reliable sources of calcium. Keeping your bones strong depends more on preventing the loss of calcium from your body than on boosting your calcium intake. Some cultures consume no dairy products and typically ingest only 175 to 475 milligrams of calcium per day. However, these people generally have low rates of osteoporosis. Many scientists believe that exercise and other factors have more to do with osteoporosis than calcium intake does.
Calcium in the Body. Almost all the calcium in the body is in the bones. There is a tiny amount in the bloodstream which is responsible for important functions such as muscle contractions, maintenance of the heartbeat, and transmission of nerve impulses. We constantly lose calcium from our bloodstream through sweat and other excretions. It is renewed with calcium from the bones.
In this process, bones continually lose calcium. This bone calcium must be replaced from food. Calcium needs change throughout life. Up to the age of 30 or so, we consume more calcium than we lose. Adequate calcium intake during childhood and adolescence is especially important.
Later, the body begins to slip into "negative calcium balance" and the bones start to lose more calcium than they take up. The loss of too much calcium can lead to soft bones or osteoporosis. How rapidly calcium is lost depends, in part, on the kind and amount of protein you eat as well as other diet and life-style choices. Reducing Calcium Loss. A number of factors affect calcium loss from the body: Diets that are high in protein cause more calcium to be lost through the urine. Pro tein from animal products is much more likely to cause calcium loss than protein from plant foods.
This may be one reason that vegetarians tend to have stronger bones than meat eaters. Caffeine increases the rate at which calcium is lose through urine. Alcohol inhibits calcium absorption. The mineral boron may slow the loss of calcium from bones. Exercise slows bone loss and is one of the most important factors in maintaining bone health.
Sources of Calcium: Exercise and a diet moderate in protein will help to protect your bones. People who eat plant-based diets and who lead an active life-style probably have lower calcium needs. However, calcium is an essential nutrient for everyone. It is important to eat calcium-rich foods every day. The following chart will tell you the calcium content of many foods.
Legumes Calcium (mg) Chickpeas, 1 cup, canned.............78 Great Northern beans, 1 cup boiled......121 Green beans, 1 cup boiled.............58 Green peas, 1 cup boiled...............44 Kidney beans, 1 cup boiled...........50 Lentils, 1 cup boiled....................37 Lima beans, 1 cup boiled...............52 Navy beans, 1 cup boiled.............128 Pinto beans, 1 cup boiled..............82 Soybeans, 1 cup boiled...............175 Tofu, raw, firm - 1/2 cup...............258 Vegetarian baked beans, 1 cup.......128 Wax beans, 1 cup canned........... 174 White beans, 1 cup boiled...........161 If using "Calcium Fortified" products, check the source of the calcium.
Research paper topics, free essay prompts, sample research papers on Calcium In Diet