Nutrition fundamentals and medical nutrition therapy pdf
Nutrition Fundamentals and Medical Nutrition Therapy
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Human nutrition deals with the provision of essential nutrients in food that are necessary to support human life and health. Poor nutrition is a chronic problem often linked to poverty, food security or a poor understanding of nutrition and dietary practices. The human body contains chemical compounds such as water, carbohydrates, amino acids found in proteins , fatty acids found in lipids , and nucleic acids DNA and RNA. These compounds are composed of elements such as carbon, hydrogen, oxygen, nitrogen, phosphorus. Any study done to determine nutritional status must take into account the state of the body before and after experiments, as well as the chemical composition of the whole diet and of all the materials excreted and eliminated from the body including urine and feces. The seven major classes of nutrients are carbohydrates , fats , fiber , minerals , proteins , vitamins , and water. These nutrient classes are categorized as either macronutrients or micronutrients needed in small quantities.
DASH diet: Healthy eating to lower your blood pressure
Nutrition is the science that interprets the interaction of nutrients and other substances in food in relation to maintenance, growth, reproduction, health and disease of an organism. It includes food intake, absorption , assimilation , biosynthesis , catabolism and excretion. The diet of an organism is what it eats, which is largely determined by the availability and palatability of foods. For humans, a healthy diet includes preparation of food and storage methods that preserve nutrients from oxidation, heat or leaching, and that reduces risk of foodborne illnesses. In humans, an unhealthy diet can cause deficiency-related diseases such as blindness , anemia , scurvy , preterm birth , stillbirth and cretinism ,  or nutrient excess health-threatening conditions such as obesity   and metabolic syndrome ;  and such common chronic systemic diseases as cardiovascular disease ,  diabetes ,   and osteoporosis. The first recorded dietary advice, carved into a Babylonian stone tablet in about BC, cautioned those with pain inside to avoid eating onions for three days. Scurvy , later found to be a vitamin C deficiency , was first described in BC in the Ebers Papyrus.