• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Vitamins
Vitamins

...  The DRI is the recommended intake level  Some vitamin DRI’s are an RDA (Recommended Dietary Allowance) some are an AI (Adequate Intake)  The Tolerable Upper Intake Level (UL) is the highest amount that is likely not to cause harm for most healthy people when consumed daily ...
A Food-Mood Connection: B Vitamins and Depression
A Food-Mood Connection: B Vitamins and Depression

... of vitamin D, but mounting evidence from clinical trials indicates that many people are deficient in vitamin D; many experts advise vitamin D supplementation, since its deficiency has been linked with a host of other health issues, including cancer, cardiovascular disease, diabetes, and dementia. Co ...
Nutritional Disorders of Skin
Nutritional Disorders of Skin

... either cannot be synthesized in the body or cannot be synthesized in adequate amount to meet the needs of the body. ...
Slideshow
Slideshow

... Vitamin C is needed to form connective tissue (in the lining of blood vessels) Vitamin C is needed for the activity of the rate limiting enzyme needed to convert blood cholesterol to bile The higher the Vitamin C blood levels the less mortality from all causes including heart disease ...
Herbal Magic Product Monograph Template
Herbal Magic Product Monograph Template

... of growth as it plays a critical role in bone mineralization.33,34 While the majority of individuals may be deficient in Vitamin D, several groups are at high risk for vitamin D deficiency, including overweight individuals.35,36 Supplementation in these groups is, therefore, especially important. A ...
Vitamin D deficiency
Vitamin D deficiency

... balance and muscle strength > 400 IU (500 IU to maintain; 5000 IU to replete) 90-100 nmol/L Further reduction in risk for many (35-40 ng/ml) chronic conditions + 2000 IU >250 nmol/L Potential adverse effects seen above this (> 100 ng/ml) level (hypercalcemia) > 10,000 IU ...
Phar 722 Pharmacy Practice III
Phar 722 Pharmacy Practice III

... much nutrient is needed to prevent a deficiency symptom. – Data supporting food components that, up to this time, have not been considered essential nutrient will be examined. • Anti-oxidants • Omega-3 fatty acids ...
Drug list #9 - aj pharmacy
Drug list #9 - aj pharmacy

... – promotes hepatic biosynthesis of vitamin K dependant clotting factors. Oral form can only be absorbed in the presence of bile salts. Injection is indicated in medication caused prothrombin deficiency ( see rxlist.com, wikipedia or other source for full list). Note: phytonadione does not counteract ...
Nutrition
Nutrition

... • Increased intake of vitamin A rich foods e.g. eggs, butter, whole milk, liver, red palm oil, ...
LECTURE NOTES BY: DR. B. C. JOSHI, SAPKM, KICHHA
LECTURE NOTES BY: DR. B. C. JOSHI, SAPKM, KICHHA

ci sono le basi per ri-valutare le specifiche delle diete
ci sono le basi per ri-valutare le specifiche delle diete

Read More
Read More

VITAMIN B12
VITAMIN B12

... protein in food. Hydrochloric acid in the stomach releases B12 from protein during digestion. Once released, B12 combines with a substance called intrinsic factor (IF) before it is absorbed into the bloodstream. The human body stores several years’ worth of vitamin B12, so nutritional deficiency of ...
CC304 Family Nutrition Guide - DigitalCommons@University of
CC304 Family Nutrition Guide - DigitalCommons@University of

... products. All four sets, including the one for the "Pregnant and Lactating Women," are useful in understanding the nutrient labels on foods as well as vitamin and mineral supplements. If vitamins and mineral supplements are used, it's wise to select levels no higher than the U.S. RDA, for the approp ...
VITAMINS D Deficiency Dr Nahid Aslani General Pediatrics Medical
VITAMINS D Deficiency Dr Nahid Aslani General Pediatrics Medical

... Patients presenting with only low levels of vitamin D and no other biochemical changes or evidence of rickets Check 25(OH)D levels after two to three months, then as needed thereafter, depending on the adequacy of the patient's intake and adherence to maintenance supplements. ...
2107lecture 11
2107lecture 11

Ocular Complete
Ocular Complete

... OcularProtect is a robust multinutrient designed to support visual and full body health. Its comprehensive formulation is based on the latest research in nutritional science. OcularProtect provides a balanced combination of antioxidants, including vitamins C and E, lipoic acid, flavonoids, 6 mg of F ...
Vitamin and Mineral Supplements for Adults
Vitamin and Mineral Supplements for Adults

... Facts table on the food label to see if a food is fortified with vitamin B12. If vitamin B12 isn’t listed, the food probably isn’t fortified. ...
Nutrition and Health
Nutrition and Health

...  It is important to meet our daily recommended dietary allowances so that our body gets everything it needs to function in a proper way  It is also important to assess the nutritional adequacy of diets for growth of infants, children and adolescents.  to maintain health in adults of both sexes an ...
Vitamins and minerals
Vitamins and minerals

... Wheat germ Peanuts Cottage cheese Whole grain bread ...
Nutritive Value of Fresh Vegetables
Nutritive Value of Fresh Vegetables

...  People who eat more vegetables and fruits as part of an overall healthy diet are likely to have a reduced risk of some chronic diseases. ...
pa dietas vegetarianas eng
pa dietas vegetarianas eng

... diet   it   is   known   that   the   absorption   of   ingested   iron   is   not   higher   than   5-­‐10   %.   The   combined   ingestion   of   iron-­‐rich   vegetables   with   foods   rich   in   tannins   (tea),   or   with   lacti ...
Nutrition - My Lifeskill Journey
Nutrition - My Lifeskill Journey

... vessels. Many adults have high blood cholesterol levels. • Insulin: A hormone secreted by your pancreas to regulate blood-sugar levels. Some people don’t produce sufficient amounts of insulin, either because of disease (diabetes) or simply because their intake of sugar is very high. ...
Micronutrients - School Nutrition and Fitness
Micronutrients - School Nutrition and Fitness

Guideline for Vitamin D Testing and Supplementation in Adults
Guideline for Vitamin D Testing and Supplementation in Adults

... consuming vitamin D-fortified foods and being exposed to some sunlight are essential for maintaining a healthy vitamin D status. In some groups, even higher quantities of dietary supplements might be required to meet the daily need for vitamin D:  Older adults are at increased risk of developing vi ...
< 1 ... 28 29 30 31 32 33 34 35 36 ... 48 >

Vitamin K



Vitamin K refers to a group of structurally similar, fat-soluble vitamins the human body needs for complete synthesis of certain proteins that are required for blood coagulation, and also certain proteins that the body uses to control binding of calcium in bone and other tissues. The vitamin K-related modification of the proteins allows them to bind calcium ions, which they cannot do otherwise. Without vitamin K, blood coagulation is seriously impaired, and uncontrolled bleeding occurs. Low levels of vitamin K also weaken bones and promote calcification of arteries and other soft tissues.Chemically, the vitamin K family comprises 2-methyl-1,4-naphthoquinone (3-) derivatives. Vitamin K includes two natural vitamers: vitamin K1 and vitamin K2. Vitamin K2, in turn, consists of a number of related chemical subtypes, with differing lengths of carbon side chains made of isoprenoid groups of atoms.Vitamin K1, also known as phylloquinone, phytomenadione, or phytonadione, is synthesized by plants, and is found in highest amounts in green leafy vegetables because it is directly involved in photosynthesis. It may be thought of as the ""plant"" form of vitamin K. It is active as a vitamin in animals and performs the classic functions of vitamin K, including its activity in the production of blood-clotting proteins. Animals may also convert it to vitamin K2.Vitamin K2, the main storage form in animals, has several subtypes, which differ in isoprenoid chain length. These vitamin K2 homologues are called menaquinones, and are characterized by the number of isoprenoid residues in their side chains. Menaquinones are abbreviated MK-n, where M stands for menaquinone, the K stands for vitamin K, and the n represents the number of isoprenoid side chain residues. For example, menaquinone-4 (abbreviated MK-4) has four isoprene residues in its side chain. Menaquinone-4 (also known as menatetrenone from its four isoprene residues) is the most common type of vitamin K2 in animal products since MK-4 is normally synthesized from vitamin K1 in certain animal tissues (arterial walls, pancreas, and testes) by replacement of the phytyl tail with an unsaturated geranylgeranyl tail containing four isoprene units, thus yielding menaquinone-4. This homolog of vitamin K2 may have enzyme functions distinct from those of vitamin K1.Bacteria in the colon (large intestine) can also convert K1 into vitamin K2. In addition, bacteria typically lengthen the isoprenoid side chain of vitamin K2 to produce a range of vitamin K2 forms, most notably the MK-7 to MK-11 homologues of vitamin K2. All forms of K2 other than MK-4 can only be produced by bacteria, which use these forms in anaerobic respiration. The MK-7 and other bacterially derived forms of vitamin K2 exhibit vitamin K activity in animals, but MK-7's extra utility over MK-4, if any, is unclear and is a matter of investigation.Three synthetic types of vitamin K are known: vitamins K3, K4, and K5. Although the natural K1 and all K2 homologues and synthetic K4 and K5 have proven nontoxic, the synthetic form K3 (menadione) has shown toxicity.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report