Increased calcium intake is associated lower serum 25-hydroxyvitamin D levels in subjects with adequate vitamin D intake: a population-based observational study
BMC Nutrition v 6, # 49 (2020) Nov 2, DOI https://doi.org/10.1186/s40795-020-00381-4
Rolf Jorde & Guri Grimnes
Males red arrow is > 840 IU of vitamin D
Possible reason: high Calcium levels ==> Inflammation ==> Vitamin D used up
Some of the problems of excess Calcium (which causes inflammation) may be decreased by
- Magnesium
- Vitamin K
- Water
- Consuming Calcium from plants not rocks
Calcium hazards and bioavailability has the following
- All items with Calcium in VitaminDWiki
227 items - Supplements taken by the founder of VitaminDWiki he takes Calcium from Red Marine Algae
- Calcium from food or supplements associated with more deaths (US Cohort of 31,000 people) – April 2019
- More Calcium absorbed with more vitamin D – 6.7% more with 4000 IU – RCT March 2014
- Decrease Calcium and Increase Magnesium when increasing vitamin D
- Calcium supplements proven to NOT reduce fractures, but are proven to INCREASE heart problems – July 2015
- More than 1.4 grams of Calcium increased male death rate by 1.4 X – Sept 2018
- 10,000 IU of Vitamin D is too much if you also take Calcium supplements – RCT Sept 2018
- Calcium Essential to Limit Osteoporosis but Avoid Excess, Say Europeans - Nov 2017
- Hypercalcemia can result from excess Vitamin D (if not reduce Ca or increase water) Oct 2016
- Must balance co-factors when increasing vitamin D 500 Ca, 500 Mg - which has the following concept graph
Items in both categories Calcium and Vitamin K are listed here:
- Which supplements are often taken for healing hairline bone fractures
- Calcium and Vitamin K2 - many studies
- Excellent reviews of supplements at ConsumerLab
- Lowering Calcium Risk when having High Dose Vitamin D3 – Cawley Dec 2019
- Hypercalcemia in critically ill patients taking 10,000 IU of vitamin D (many solutions) – Oct 2019
- Calcium Supplementation is OK provided you also take Vitamin K – Feb 2019
- Calcium supplements go to muscle, not bone, unless have enough Vitamin K – Feb 2019
- Drugs which create deficiencies in Vitamin D, Vitamin K, Magnesium, Zinc, Iron, etc. – Sept 2017
- Vitamin D Cofactors in a nutshell
- Vascular calcification greatly reduced by 3 per week 1000 ug of Vitamin K2 MK-7 – Dec 2013
- Increased Vitamin K2 reduces the problems of excess Calcium – Nov 2013
- Review of Micronutrients such as vitamin D for women and childhood – Aug 2013
- Healthy bones need Ca, Silicon, Vitamins B, C, D, and K – Dec 2012
- Interview of Vitamin K2 and Calcium Paradox author by Dr. Mercola – Dec 2012
- Vitamin K2 and the Calcium Paradox – 2012 book
- Low cost cofactors for vitamin D
- Postmenopausal women should supplement vitamins C D K and Calcium – June 2010
Items in both categories Calcium and Magnesium are listed here:
- Vitamin D Roles - more than just help the immune system
- Magnesium raised Vitamin D, lowered blood pressure and Ca to Mg ratio – RCT Sept 2024
- Which supplements are often taken for healing hairline bone fractures
- Less Calcification if less Calcium or more Vitamin K, Magnesium, etc. - many studies
- You are probably unaware that health needs a Ca-Mg ratio of 2 – Sept 2022
- Calcium to Magnesium Ratio - many studies
- COVID treatment patent applied for - using Rutin, Vitamin D, Vitamin C, Magnesium, etc. – April 2022
- Excellent reviews of supplements at ConsumerLab
- Increased dental decay if take Calcium without Magnesium – Feb 2020
- Off topic: Transcutaneous enhancers (DMSO, etc) for Vitamin D, Vitamin C, Resveratrol, Magnesium, etc.
- Colorectal Cancer risk increases 1.6 X if high Calcium, low Magnesium and a poor gene – Sept 2007
- Mineral adsorption and Vitamin D (Magnesium, Calcium, etc) - 2011
- Drugs which create deficiencies in Vitamin D, Vitamin K, Magnesium, Zinc, Iron, etc. – Sept 2017
- Natural variation in mineral content of a food is typically 3 to 1 – Nov 2016
- Interactions between Magnesium, Vitamin D, and Calcium – April 2016
- Is a health problem associated with Low vitamin D, Low Magnesium, or too much Calcium – Jan 2016
- Vitamin D - Comparing Symptoms of Hypercalcemia with Low Magnesium - Sept 2015
- Vitamin D Cofactors in a nutshell
- Vitamin D increases mineral availability which protect against toxic elements - July 2015
- Stronger bones after 3 generations of tap water (more Ca and Mg) vs bottled water – March 2015
- Magnesium may be more important to kids’ bone health than calcium – May 2013
- Calcium 2X of Magnesium seems good – China Feb 2013
- RDA upper limit etc for Vitamin D and Magnesium - Sept 2011
- Weight loss and Vitamin D, Calcium, and Magnesium
- Decrease Calcium and Increase Magnesium when increasing vitamin D
- 400 IU of vitamin D Magnesium and Calcium helped Twin bones – Feb 2011
- Low cost cofactors for vitamin D
- Constipation - Magnesium, Calcium and cofactors
- Calcium in food increased much more than Magnesium in recent decades April 2010
Download the PDF from VitaminDWiki
Background
There are indications that an increased intake of calcium has a vitamin D sparing effect, which might be explained by a decreased catabolism of 25-hydroxyvitamin D (25(OH)D). However, there are only a few studies where this has been examined.Method
In the seventh survey of the Tromsø study, serum 25(OH)D and parathyroid hormone were measured, and questionnaires on calcium and vitamin D intakes filled in.Results
There were significant interactions between sex, calcium and vitamin D intakes regarding serum 25(OH)D level. The analyses were therefore done stratified. In males there was, regardless of vitamin D intake, a significant decrease in serum 25(OH)D with increasing calcium intake. The difference in serum 25(OH)D between those with the highest and lowest calcium intakes was approximately 10%. In the females, there was in subjects with low vitamin D intake (< 7 μg/d) a significant increase in serum 25(OH)D with increasing calcium intake, which could not be explained by secondary hyperparathyroidism. In females with higher vitamin D intakes, increasing calcium intake was associated with lower serum 25(OH)D levels.Conclusions
There is, at least in subjects with an adequate vitamin D intake, a negative association between calcium intake and serum 25(OH)D.Increased Calcium decreases Vitamin D in males – Nov 2020Printer Friendly Follow this page for updates2833 visitors, last modified 03 Nov, 2020, This page is in the following categories (# of items in each category)Attached files
ID Name Uploaded Size Downloads 14516 Ca reducesD in males.jpg admin 02 Nov, 2020 67.10 Kb 475 14515 Increased calcium makes for reduced Vitamin D.pdf admin 02 Nov, 2020 931.56 Kb 443