UL tolerable upper intake level. Established by the Food and Nutrition Board of the US Institute of Medicine, the UL is the highest level of daily intake of a specific nutrient likely to pose no risk of adverse health effects in almost all individuals of a specified age.
Ulcerative colitis a chronic inflammatory disease of the colon and rectum. Symptoms of ulcerative colitis include abdominal pain, cramping and bloody diarrhea.
Ultrasonography a test in which high-frequency sound waves (ultrasound) are bounced off tissues and the echoes are converted into a picture (sonogram).
unbiased Impartial; without prejudice.
Unsaturated fatty acids (UFA) UFA's are important in lowering blood cholesterol and may thus help prevent heart disease. They are essential for normal glandular activity, healthy skin, mucous membranes and many metabolic processes.
Unsaturated fatty acids (UFA) are fatty acids whose carbon chain contains one or more double or triple bonds, and which are capable or receiving more hydrogen atoms. They include the group polyunsaturates, are generally liquid at room temperature and are derived from vegetables, nuts, seeds or other sources. Examples of unsaturated fatty acids include corn oil, safflower oil, sunflower oil and olive oil. Replacing saturated fats with unsaturated fats in the diet can help reduce cholesterol levels.
A small amount of highly unsaturated fatty acid is essential to animal nutrition. The body cannot de-saturate a fat, such as vegetable shortening or margarine, sufficiently by its own metabolic processes to supply this essential need. Therefore, the dietary inclusion of unsaturated or polyunsaturated fats is vital.
The three essential fatty acids (those which the body is unable to manufacture) are linoleic acid, linolenic acid, and arachidonic acid. However, these fatty acids can be synthesized from linoleic acid if sufficient intake occurs. Linoleic acid should provide about 2% of total dietary calories. Corn, safflower and soybean oils are high in linoleic acid. cf. monounsaturated fat, polyunsaturated fat, saturated fat.
umbel Botany: an umbrella-shaped inflorescence, in which the flower pedicles (stalks) radiate from a common point like the ribs of an umbrella.INFLORESCENCE in which the PEDUNCLE or pedicels of a flower cluster arise from a common point.
uracil a pyrimidine base found in ribonucleic acid (RNA).
urban Pertaining to or constituting a city.
urease an enzyme that accelerates hydrolysis of urea into ammonium carbonate and hippuric acid into glycocoll and benzoic acid. It is found in alkaline fermentation of urine, is produced by many microorganisms, and also occurs in jackbeans and soybeans.
urticaria vascular reaction of the skin characterized by the eruption of pale evanescent wheals, associated with severe itching; syn. hives, nettle rash.
UV-A ultraviolet radiation between the wavelengths of 320-400 nm.
UV-B ultraviolet radiation between the wavelengths of 290-320 nm. Principle portion of UV spectrum that causes sunburn.
UV protection(Products Claim/GNPD) flagged for non-food products only which offer protection from ultraviolet rays emitted from the sun. Products with SPFs (sun protection factors) on their packaging.
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Information presented this site meant for nutritional benefit and as an educational starting point only, for use in maintenance and promotion good health in cooperation with a common knowledge base reference...Furthermore,it based solely on the traditional and historic use or legend of a given herb from the garden of Adonis. Although every effort has been made to ensure its accurate, please note that some info may be outdated by more recent findings and developments!
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