Bio and chemistry

Introduction to Nutrition  Nutrition are substances, which provide energy to the human body and include carbohydrates, proteins, fats and lipids, minerals, vitamins, eggs, water etc. Food is the main source of the body fuels.  The ingested food undergoes metabolism to give energy required for the vital activities of the body. Details included as; CARBOHYDRATES One gram of carbohydrates gives 4.6 Kilo calories (4600 calories). Carbohydrates rich foods are potatoes, cane sugar, cereals, fruits, sweets, syrups, chocolates and beet roots. Glucose can be produced in the body from amino acids and glycerol Carbohydrates  and fats are protein sparer i.e. they are used first, as the source of energy, instead of proteins hence prevent protein loss. Protein sparing action of carbohydrates is greater than that of fats. Some intermediate products of carbohydrate metabolism provide amino acids e.g. pyruvic acid and oxaloacetic acid can be aminated to form alanine and aspartic acid resp...