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Nutrition

Aside from not smoking, the most important determinants of good health are what we eat and how active we are. The Nutrition Source is designed to get you started down the path toward the healthiest diet possible. Nutrition, nourishment, or aliment, is the supply of materials - food - required by organisms and cells to stay alive. In science and human medicine, nutrition is the science or practice of consuming and utilizing foods

nutriIn the What Should I Eat section, you’ll find ten key tips for eating right, plus our bottom line recommendations on carbohydrates, protein, fats, fiber, vegetables and fruits, calcium and milk, healthy drinks, lower salt and sodium, alcohol, and vitamins. You can also learn more about a food pyramid and plate that are actually based on the latest science: the Healthy Eating Pyramid, created by the Department of Nutrition at Harvard School of Public Health, and its new companion, the Healthy Eating Plate, built in conjunction with colleagues at Harvard Health Publications. A lot of confusing information about nutrition gets batted about in the media and on the Web. The Nutrition Source will cut through all that confusion, providing clear tips for healthy eating and dispelling a few nutrition myths along the way.

In hospitals, nutrition may refer to the food requirements of patients, including nutritional solutions delivered via an IV (intravenous) or IG (intragastric) tube. Nutritional science studies how the body breaks food down (catabolism) and repairs and creates cells and tissue (anabolism) - catabolism and anabolism = metabolism.

Nutritional science also examines how the body responds to food. In other words, "nutritional science investigates the metabolic and physiological responses of the body to diet". As molecular biology, biochemistry and genetics advance, nutrition has become more focused on the steps of biochemical sequences through which substances inside us and other living organisms are transformed from one form to another - metabolism and metabolic pathways.

What are the eight most popular diets today?

Nutrition also focuses on how diseases, conditions and problems can be prevented or lessened with a healthy diet. Nutrition also involves identifying how certain diseases, conditions or problems may be caused by dietary factors, such as poor diet (malnutrition), food allergies, metabolic diseases, etc. Five fruit and veggies a day helps you live longer - researchers from the Karolinska Institute, Sweden found that people who ate their "five-a-day" portions of fruit-and-veggies tended to live longer than those who did not. Their findings were published in the American Journal of Clinical Nutrition (July 2013 issue). The researchers said that for those who went a step further and had more than five portions per day, there appeared to be no additional benefits in terms of longer lifespans.

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What is the difference between a dietician and a nutritionist?

A dietician studied dietetics, while a nutritionist studied nutrition. The two terms are often interchangeable, however they are not 100% identical.

Dietetics: the interpretation and communication of the science of nutrition so that people can make informed and practical choices about food and lifestyle, in both health and disease. Part of a dietician's course includes both hospital and community settings. The majority of dieticians work in health care, education and research, while a much smaller proportion also work in the food industry. A dietician must have a recognized degree (B.Sc. or M.Sc), or postgraduate degree in nutrition and dietetics to work as a dietician.

Nutrition: the study of nutrients in food, how the body uses nutrients, and the relationship between diet, health and disease. Major food manufacturers employ nutritionists and food scientists. Nutritionists may also work in journalism, education and research. Many nutritionists work in the field of food science and technology. There is a lot of overlap between what nutritionists and dieticians do and studied. Some nutritionists work in health care, some dieticians work in the food industry, but a higher percentage of nutritionists work in the food industry and food science and technology, and a higher percentage of dieticians work in health care.

Everyone in medicine is involved in nutrition

If you ask any health care professional, be it a doctor, nurse, psychologist, or dentist to identify a part of medicine that is not at all related to nutrition, there will be a long silence as they scratch their heads. Nutrition is present in all processes of life. Right from the very moment the sperm fertilizes an egg, through fetal development in the uterus, to the birth, human growth, maturity, old age, and eventual death. Even after death the human body serves as nutrition for other organisms. Anything that involves life and chemical or biochemical movement has nutrition at its core. Anything that lives is dependent on energy, which results from the combustion of food.

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Nutritional science studies how the body breaks food down (catabolism) and repairs and creates cells and tissue (anabolism) - catabolism and anabolism = metabolism. Nutritional science also examines how the body responds to food. In other words, "nutritional science investigates the metabolic and physiological responses of the body to diet".
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