By Cat, June 2019
Vitamin F is another name for essential fatty acids; see my post: Essential Fatty Acids: A Case of Balance for more about these essential fatty acids.
Early in the research of Dr. Weston A. Price, he discovered a substance he called the X-Factor in good quality butter and butter oil, that he found to be essential for good health. Later the X-Factor was believed to be a member of the Vitamin F family, but has since been identified as Vitamin K2. See my article on Vitamin K for more.
- Includes: 1. Introduction (above)
- See Also: 1.Diet & Health Menu; 2. Vitamins: Intro; 3. Supplements vs Whole Foods (Intro); 4. Vitamin A; 5. Vitamin B complex; 6. Vitamin C; 7. Vitamin D; 8. Vitamin E; 9. Vitamin K;
- Other Sites (regarding vitamin K): 1. Dr Royal Lee and the X-Factor of Dr. Price (Historial archive; (4A)); 2. Butter, Vitamin E and the X-Factor of Dr Price (Historial archive 4B); 3. The Mystery of Butter Oil X-Factor and Vitamin K2: Solved (5B); 4. The Discovery of Vitamin K2 and its Clinical Applications (ncbi study abstract (3A))
References
References 1 – 6 are common to all my vitamin pages; those specific with vitamins E and K begin with number 7.
- well.blogs.nytimes.com/2008/02/06/despite-risks-vitamins-popular-with-cancer-patients/
- (6) dailyyonder.com/four-food-groups/2010/03/04/2623
- ncbi abstracts (3B – 3G originally cited in Supplements for Insulin Resistance, as numbers 21A – 21F)
- (new) ncbi.nlm.nih.gov/pubmed/23183291
- (21A in Supplements for IR) ncbi.nlm.nih.gov/pubmed/7622343
- (21B) ncbi.nlm.nih.gov/pubmed/6278902
- (21C) ncbi.nlm.nih.gov/pubmed/22986984
- (21D) ncbi.nlm.nih.gov/pubmed/9169302
- (21E) ncbi.nlm.nih.gov/pubmed/3017301
- (21F) ncbi.nlm.nih.gov/pubmed/8131066
- (9A) ncbi.nlm.nih.gov/pubmed/19091068 for Nutrition Journal, December 17, 2008 on PubMed
- Selene River Press, by and about Dr Royal Lee, regarding Dr W. A. Price’s XFactor:
- Dr Royal Lee’s original article on Dr Weston A. Price’s XFactor: seleneriverpress.com/historical/dr-royal-lee-on-the-x-factor-of-dr-weston-a-price/; or see the original article: 6sd6hj41ya-flywheel.netdna-ssl.com/images/pdfs/40_weston_price_vitamin_f.pdf (I’ve also saved it as a pdf: CATSFORK > PDF FILES / Price-VitaminF-XFactor_Dr RoyalLee.pdf)
- Butter, Vitamin E, and the X-Factor (historical archive of Dr Lee’s article) (seleneriverpress.com/historical/butter-vitamin-e-and-the-x-factor-of-weston-a-price/)
- Lectures of Dr. Royal Lee, Vitamin News (seleneriverpress.com/shop/lectures-of-dr-royal-lee-volume-i-pdf-ebook/
- Vitamin News, a collection of all the biannual issues in one book: (seleneriverpress.com/shop/vitamin-news/
- SRP Historical Archives: seleneriverpress.com/srp-historical-archives/
- Articles on The X-Factor of Dr. Weston A. Price:
- More articles by Dr. Royal Lee: soilandhealth.org/wp-content/uploads/02/0203CAT/royal.lee.lets.live.articles.htm
- Mercola: differences from vitamin b list begins here
- (A7) articles.mercola.com/sites/articles/archive/2008/12/23/important-cod-liver-oil-update.aspx
- (D1) articles.mercola.com/sites/articles/archive/2008/12/27/important-vitamin-d-update.aspx
- (D2) articles.mercola.com/sites/articles/archive/2011/12/14/study-shows-vitamin-d-cuts-flu-by-nearly-50.aspx?e_cid=20111209_DNL_artTest_C5
- (D6) articles.mercola.com/sites/articles/archive/2011/12/19/why-are-cancer-cases-rising-by-nearly-50-in-the-next-20-years.aspx
- (D7) articles.mercola.com/sites/articles/archive/2009/12/01/Important-New-Vitamin-D-Research-Papers.aspx
- (D8) articles.mercola.com/sites/articles/archive/2011/11/13/vitamin-d-for-depression.aspx
- (D10) articles.mercola.com/sites/articles/archive/2008/11/18/do-flu-shots-work-ask-a-vaccine-manufacturer.aspx
- (D15) articles.mercola.com/sites/articles/archive/2008/02/12/why-vitamin-d-supplements-are-not-the-same-as-sunlight.aspx
- (new) products.mercola.com/vitamin-d-supplement/
- (new) mercola.com/article/vitamin-d-resources.htm
- (new) articles.mercola.com/sites/articles/archive/2003/10/08/cancer-vitamin-k.aspx
- (new) articles.mercola.com/sites/articles/archive/2004/03/24/vitamin-k-part-two.aspx
- (new) products.mercola.com/vitamin-k/
- (new) articles.mercola.com/sites/articles/archive/2009/06/13/The-Key-Vitamin-for-Bone-Health-that-Most-People-Dont-Know-About.aspx