June 2, 2017
I think this book is amazing however I just wanted to warn people doing this …By Anonymous on October 24, 2016
Format: Kindle Edition|Verified Purchase
I think this book is amazing however I just wanted to warn people doing this to consider adding Vitamin A (actual A- not beta ceretine). I was taking 30,000 iu of D3 along with 3 “Super K” K2 pills from Life Extention however after a few months I started to develop hypothyroid problems.
After reading “The Calcium Paradox” by Dr. Kate-Rheume-Bleue I realized how important Vitamin A might be.
After researching a little more I found that all of the fat soluble vitamins D,A,K2 seem work together in equal amounts & that “toxicity” may be just a deficiency of the other. There have been studies to show that adding Vitamin A to Vitamin D prevents toxicity & even though it lowers Vitamin D level in the blood the positive effects of the action in the proteins & cells is even better than with D alone.Anyway I took a megadose of 40,000 iu of A & within 24 hours I felt great & I have been continuing to take equal amounts of D & A along with the correct balance of K2 & I feel amazing!I just wanted to put this out there in case this happens to anyone else. It seems that there are other people who have had this happen & they have all been women. I’m wondering if there is a connection since women seem to have more thyroid issues than men & that Vitamin A plays a huge role in thyroid hormones & reproduction.
1 comment|30 people found this helpful. Penelope5 months ago
Vitamin A can negate the benefits of vitamin D. In an article titled “Association between pre-diagnostic circulating vitamin D concentration and risk of colorectal cancer in European populations”, published in British Medical Journal, authors point out that while supplementing vitamin D3 lowers the risk of colorectal cancer in a dose dependent fashion, co-supplementing with retinol (vitamin A) dampens this effect: “The dose-response analysis of the interaction between circulating 25-(OH)D concentration and level of dietary retinol intake (P for interaction=0.030) indicates that the inverse colorectal cancer risk association of higher 25-(OH)D was stronger at lower intakes of retinol.”