Niacin recommended daily allowance

NAD% the oxidized form of NADH, is a biological oxidizing agent capable of oxidizing alcohols to carbonyl compounds (it forms NADH in the process). NAD is synthesized from the vitamin niacin, which can be obtained from soybeans among other dietary sources. Breakfast cereals are fortified with niacin to help people consume their recommended daily allowance of this B vitamin. 

Nicotinic acid (niacin), when its use was introduced, cured hundreds of thousands of pellagra patients of their psychoses, as well as of the physical manifestations of their disease. For this purpose only small doses are required the recommended daily allowance (National Research Council) is 12 milligrams per day (for a 70-kilogram male). In 1939 Cleckley et al. reported the successful treatment of 19 patients, and... 

The body s need for most vitamins is relatively low. The amounts needed to ensure the normal physiological function of humans is dependent on many factors such as age, sex, health status, lifestyle, eating habits and work-related activity. Many countries have recommendations for the daily intake of vitamins, which are continually revised in accordance with contemporary scientihc knowledge and dietary guidelines. Presently, Recommended Daily Allowances (RDAs) are set in the EU (upper number) and United States (lower number) as follows vitamin A (800/900 xg), vitamin D (5/15 xg), vitamin E (12/15 mg), vitamin K (75/120 xg), thiamine (1.1/1.2 mg), riboflavin (1.4/1.3 mg), niacin (16/16 mg), pantothenic acid (6/5 mg), vitamin Bg (1.4/1.3 mg), biotin (50/30 xg), folacin (200/400 (xg), vitamin Bj2 (2.5/2.4 xg) and vitamin C (80/90 mg). 

In 1940, the National Academy of Sciences-National Research Council appointed a Committee on Food and Nutrition (later called the Food and Nutrition Board) to develop a table of Recommended Daily Allowances for Specific Nutrients. This committee proposed the use of the term enriched and set up minimum and maximum limits for the enrichment of bread and flour with thiamin, riboflavin, niacin, and iron. With the support of the millers, enriched flour became available to the public and wtis used by the Army and Navy. 

The lower part of the nutrition label must give the percentages of the U.S. Recommended Daily Allowances (U.S. RDA) of protein and seven vitamins and minerals in a serving of the product, in the following order protein, vitamin A, vitamin C, thiamin, riboflavin, niacin, calcium, and iron. The listing of 12 other vitamins and minerals, and of cholesterol, fatty acid, and sodium content is optional—for now. Nutrients present at levels less than 2% of the U.S. RDA may be indicated by a zero or an asterisk which refers to the statement, "contains less than 2% of the U.S. RDA of these nutrients."... 

RECOMMENDED DAILY ALLOWANCE OF NIACIN. Estimation of niacin requirements are complicated (1) by the fact that some tryptophan is converted to niacin in man, (2) by the paucity of people of different ages receiving diets varying in niacin and tryptophan content, and (3) by the possible unavailability of niacin in some foods (such as corn). 

The Food and Nutrition Board (FNB) of the National Research Council (NRC) recommended daily allowances of niacin are given in the section on VITAMIN(S), Table V-5, Vitamin Table, Niacin. Allowances for niacin are commonly related (1) to energy expenditure, based the essential role of niacin in energy formation— the involvement of the coenzymes NAD and NADP in the functions of respiratory enzymes and (2) to protein intake, because (a) a diet that fur-... 

PORK AS A FOOD. Pork is an important food and a rich source of many essential nutrients. An average 3.5 oz (99.4 g) serving of cooked pork ham provides 37 g of protein (that s 2/ 3 of the recommended daily allowance of protein) and 8.8 g of fat, along with being an excellent source of minerals and vitamins. Its high-quality protein contains all the essential amino acids needed to build, maintain, and repair body tissues. Pork is rich in iron, and the iron is readily used in the formation and maintenance of red blood cells. Also, pork is a major dietary source of the B vitamins, especially thiamin, riboflavin, and niacin. Also pork is about 98% digestible. 

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