The Greeks also had a floral goddess, Chloris, who was married to Zephyrus, the god of the west wind. The Romans called her Flora and honored her each year with a celebration known as the Floralia. She was often portrayed holding flowers or scattering them; her blossom-crowned image appeared on coins of the Roman republic.
Vitamin B6 Oxford University closed down its nutrition department after World War II because the subject seemed to have been completed between and The vitamins were studied in the first half of the 20th century.
InElmer McCollum and Marguerite Davis discovered the first vitamin, fat-soluble vitamin Athen water-soluble vitamin B in ; now known to be a complex of several water-soluble vitamins and named vitamin C as the then-unknown substance preventing scurvy.
InSir Edward Mellanby incorrectly identified rickets as a vitamin A deficiency because he could cure it in dogs with cod liver oil. Bishop discover vitamin E as essential for rat pregnancy, originally calling it "food factor X" until InHart discovered that trace amounts of copper are necessary for iron absorption.
Inhe synthesized it, and inhe won a Nobel Prize for his efforts. In the s, William Cumming Rose identified essential amino acidsnecessary protein components that the body cannot synthesize. InUnderwood and Marston independently discovered the necessity of cobalt.
InEugene Floyd DuBois showed that work and school performance are related to caloric intake. InErhard Fernholz discovered the chemical structure of vitamin E and then he tragically disappeared.
InThe U. Department of Agriculture introduced the Food Guide Pyramid. Nutrient The list of nutrients that people are known to require is, in the words of Marion Nestle"almost certainly incomplete". Some nutrients can be stored - the fat-soluble vitamins - while others are required more or less continuously.
Poor health can be caused by a lack of required nutrients, or for some vitamins and minerals, too much of a required nutrient. Macronutrients[ edit ] The macronutrients are carbohydratesfiberfatsproteinand water. Some of the structural material can be used to generate energy internally, and in either case it is measured in Joules or kilocalories often called "Calories" and written with a capital C to distinguish them from little 'c' calories.
Vitamins, minerals, fiber, and water do not provide energy, but are required for other reasons. Molecules of carbohydrates and fats consist of carbon, hydrogen, and oxygen atoms. Carbohydrates range from simple monosaccharides glucose, fructose and galactose to complex polysaccharides starch.
Fats are triglyceridesmade of assorted fatty acid monomers bound to a glycerol backbone. Some fatty acids, but not all, are essential in the diet: Protein molecules contain nitrogen atoms in addition to carbon, oxygen, and hydrogen. The fundamental components of protein are nitrogen-containing amino acidssome of which are essential in the sense that humans cannot make them internally.
Some of the amino acids are convertible with the expenditure of energy to glucose and can be used for energy production, just as ordinary glucose, in a process known as gluconeogenesis.
By breaking down existing protein, the carbon skeleton of the various amino acids can be metabolized to intermediates in cellular respiration; the remaining ammonia is discarded primarily as urea in urine.
Carbohydrate Carbohydrates may be classified as monosaccharidesdisaccharidesor polysaccharides depending on the number of monomer sugar units they contain.
They constitute a large part of foods such as ricenoodlesbreadand other grain -based products, also potatoesyams, beans, fruits, fruit juices and vegetables. Monosaccharides, disaccharides, and polysaccharides contain one, two, and three or more sugar units, respectively.
Polysaccharides are often referred to as complex carbohydrates because they are typically long, multiple branched chains of sugar units. Traditionally, simple carbohydrates are believed to be absorbed quickly, and therefore to raise blood-glucose levels more rapidly than complex carbohydrates.
This, however, is not accurate. Dietary fiber Dietary fiber is a carbohydrate that is incompletely absorbed in humans and in some animals.
Like all carbohydrates, when it is metabolized it can produce four Calories kilocalories of energy per gram. However, in most circumstances it accounts for less than that because of its limited absorption and digestibility.Myth: Hypertension or high blood pressure is typically plus your age.
Years ago, this incredibly simplistic dictum was taken as gospel by the medical profession. Debunking Blood Type Myths. By Carter BloodCare | 4 comments | General | 2 September, What’s your blood type? If you’re like most Americans, you probably don’t know off the top of your head. Blood type is a genetic trait that is determined by your parents, just like eye color or ear shape.
There are four main blood types (A, B, O. Breast cancer will affect 1 in 8 women during their lifetime — and it is the fourth-leading cause of cancer death in the United States.
But 8 in 8 women are being exploited by those looking to . Making electricity from falling water can seem like magic, and that’s led to lots of misconceptions. Here, we’ll separate fact from fiction when it comes to what microhydro systems can and cannot do. Busting Myths About Blood Borne Pathogens.
Posted on Mar 5, pm PST If you are in need of blood cleaning serving Orlando, you may be wondering about the myths and facts about blood borne pathogens.
Some common myths include that transmission cannot be prevented after exposure. In fact, immediate action can help . 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.