Skip to main content

Home/ Vitamin D/ Group items tagged vitamin_A

Rss Feed Group items tagged

Matti Narkia

Retinol-induced Intestinal Tumorigenesis in Min/+ Mice and Importance of Vitamin D Stat... - 1 views

  •  
    "Retinol-induced Intestinal Tumorigenesis in Min/+ Mice and Importance of Vitamin D Status.
    Hetland RB, Alexander J, Berg JP, Svendsen C, Paulsen JE.
    Anticancer Res. 2009 Nov;29(11):4353-60.
    PMID: 20032378

    The effects of life-long dietary exposure, starting in utero, to high retinol, low vitamin D, or high retinol in combination with low vitamin D on intestinal tumorigenesis in Min/+ mice were investigated. In males, high retinol alone significantly increased the number (2.6-fold) and size (1.3-fold) of small intestinal tumours; in females no significant increase in tumour number or size was seen. In both genders, low vitamin D intake alone did not affect intestinal tumorigenesis. In males, intake of the combined high retinol/low vitamin D diet did not further increase the effects caused by high retinol alone. In females, however, the high retinol/low vitamin D-induced increase in tumour number (3.1-fold) and tumour size (1.5-fold) exceeded that of high retinol alone. In conclusion, a high dietary intake of retinol stimulated intestinal tumorigenesis in Min/+ mice. Furthermore, the results indicate a combined effect of high retinol and low vitamin D on tumorigenesis in females"
Matti Narkia

On the Trail of the Elusive X-Factor: A Sixty-Two-Year-Old Mystery Finally Solved - 0 views

  •  
    In 1945, Dr. Weston Price described "a new vitamin-like activator" that played an influential role in the utilization of minerals, protection from tooth decay, growth and development, reproduction, protection against heart disease and the function of the brain.

    Using a chemical test, he determined that this compound-which he called Activator X-occurred in the butterfat, organs and fat of animals consuming rapidly growing green grass, and also in certain sea foods such as fish eggs.

    Vitamin K2 is produced by animal tissues, including the mammary glands, from vitamin K1, which occurs in rapidly growing green plants.

    A growing body of published research confirms Dr. Price's discoveries, namely that vitamin K2 is important for the utilization of minerals, protects against tooth decay, supports growth and development, is involved in normal reproduction, protects against calcification of the arteries leading to heart disease, and is a major component of the brain
Matti Narkia

Vitamin D and Vitamin K Team Up to Lower CVD Risk - Part II - 0 views

  •  
    Strong correlations have been noted between cardiovascular diseases and low bone density / osteoporosis-connections so strong that the presence of one is considered a likely predictor of the other. This relationship has led to the hypothesis that these conditions share core pathophysiological mechanisms. Recent advances in our understanding of the complimentary roles played by vitamin D3 and vitamin K2 in vascular and bone health provide support for this hypothesis, along with insight into key metabolic dysfunctions underlying cardiovascular disease and osteoporosis.

    Part II, The Vitamin K Connection to Cardiovascular Health, reviews the ways in which vitamin K regulates calcium utlization, preventing vascular and soft tissue calcification while complimenting the bone-building actions of vitamin D, and also discusses vitamin K safety and dosage issues, and the necessity of providing vitamin K and vitamin A along with vitamin D to preclude adverse effects associated with hypervitaminosis D.
Matti Narkia

The Daily Lipid: Tufts University Confirms That Vitamin A Protects Against Vitamin D To... - 0 views

  •  
    Tufts University Confirms That Vitamin A Protects Against Vitamin D Toxicity by Curbing Excess Production of Vitamin K-Dependent Proteins
    Tufts University confirmed my hypothesis that vitamin A protects against vitamin D's induction of renal calcification (kidney stones) by normalizing the production of vitamin K-dependent proteins in December, 2008, without citing my hypothesis or telling me they had confirmed it. I am, of course, very grateful that they thought it significant enough to investigate.
Matti Narkia

On the Trail of the Elusive X-Factor: Vitamin K2 Revealed - 0 views

  •  
    Vitamin K2 is produced by animal tissues, including the mammary glands, from vitamin K1, which occurs in rapidly growing green plants.

    A growing body of published research confirms Dr. Price's discoveries, namely that vitamin K2 is important for the utilization of minerals, protects against tooth decay, supports growth and development, is involved in normal reproduction, protects against calcification of the arteries leading to heart disease, and is a major component of the brain.

    Vitamin K2 works synergistically with the two other "fat-soluble activators" that Price studied, vitamins A and D. Vitamins A and D signal to the cells to produce certain proteins and vitamin K then activates these proteins.

    Vitamin K2 plays a crucial role in the development of the facial bones, and its presence in the diets of nonindustrialized peoples explains the wide facial structure and freedom from dental deformities that Weston Price observe
Matti Narkia

Cod liver oil, vitamin A toxicity, frequent respiratory infections, and the vitamin D d... - 0 views

  •  
    Cod liver oil, vitamin A toxicity, frequent respiratory infections, and the vitamin D deficiency epidemic.
    Cannell JJ, Vieth R, Willett W, Zasloff M, Hathcock JN, White JH, Tanumihardjo SA, Larson-Meyer DE, Bischoff-Ferrari HA, Lamberg-Allardt CJ, Lappe JM, Norman AW, Zittermann A, Whiting SJ, Grant WB, Hollis BW, Giovannucci E.
    Ann Otol Rhinol Laryngol. 2008 Nov;117(11):864-70. Review.
    PMID: 19102134

    Until we have better information on doses of vitamin D that will reliably provide adequate blood levels of
    25(OH)D without toxicity, treatment of vitamin D deficiency in otherwise healthy children should be individualized
    according to the numerous factors that affect 25(OH)D levels, such as body weight, percent body fat,
    skin melanin, latitude, season of the year, and sun exposure.2 The doses of sunshine or oral vitamin D3 used
    in healthy children should be designed to maintain 25(OH)D levels above 50 ng/mL. As a rule, in the absence
    of significant sun exposure, we believe that most healthy children need about 1,000 IU of vitamin D3 daily
    per 11 kg (25 lb) of body weight to obtain levels greater than 50 ng/mL. Some will need more, and others less.
    In our opinion, children with chronic illnesses such as autism, diabetes, and/or frequent infections should be
    supplemented with higher doses of sunshine or vitamin D3, doses adequate to maintain their 25(OH)D levels
    in the mid-normal of the reference range (65 ng/mL) - and should be so supplemented year round. Otolaryngologists
    treating children are in a good position to both diagnose and treat vitamin D deficiency.
Matti Narkia

Current micronutrient recommendations in Europe: towards understanding their difference... - 0 views

  •  
    Current micronutrient recommendations in Europe: towards understanding their differences and similarities.
    Doets EL, de Wit LS, Dhonukshe-Rutten RA, Cavelaars AE, Raats MM, Timotijevic L, Brzozowska A, Wijnhoven TM, Pavlovic M, Totland TH, Andersen LF, Ruprich J, Pijls LT, Ashwell M, Lambert JP, van 't Veer P, de Groot LC.
    Eur J Nutr. 2008 Apr;47 Suppl 1:17-40.
    PMID: 18427858
    DOI: 10.1007/s00394-008-1003-5

    Full text:

    http://www.eurreca.org/downloadattachment/3199/1535/ejn%201003ov.pdf
Matti Narkia

Preventing Osteoporosis through Diet and Lifestyle - Linus Pauling Institute at Oregon ... - 0 views

  •  
    Linus Pauling Institute at Oregon State University
1 - 13 of 13
Showing 20 items per page