Here is a reasonable summary of the story.
Calcium linked to higher risk of heart attacks BMJ Group
Dr Davis Heartscanblog
has been warning about too much supplemental calcium for some time. He specializes in reducing calcification by using scans to monitor the effect of his dietary and lifestyle modifications and uses EFFECTIVE strength D3 supplements so has first hand knowledge of the need (or lack of) calcium when 25(OH)D levels are above 40ng/ml.
this paper shows that
Dietary calcium and serum 25-hydroxyvitamin D status in relation to BMD among U.S. adults.
Above vitamin D Levels of > 20 ng/ml Men
don't need more than 626 mg/day
supplemental calcium, and women with D
don't need more than 566 mg/day.
If you raise your 25(OH)D to around or above 40ng it's possible you will absorb even more calcium from food/water and thus be able to reduce supplemental calcium even more.
Magnesium counterbalances the actions of calcium so it's important to ensure you are getting sufficient magnesium anyway and particularly if you use calcium supplements. See what Krispin says here
It is more likely you are deficient in magnesium than calcium as food/water sources of calcium are more readily available but modern crop varieties have reduced magnesium content.
Vitamin K2 also helps to lock calcium into bones and checking the acidity of your urine
reducing the acidogenicity of the diet into the alkali-producing range with bicarbonate lowers calcium excretion and the bone resorption rate in healthy older men and women consuming rather typical acid-producing American diets.
Recipe for Magnesium Bicarbonate water
For UK readers the cheapo discount retailer Aldi do a carbonated spring water £1 for 4 x 2lt with a high magnesium bicarbonate level, for those without access to a soda stream.
-Adults under age 50 need a total of 1,000 mg of calcium from all sources every day.
-Adults 50 and older need a total of 1,200 mg of calcium from all sources every day. and the
BEST source is diet = food and water
We should be getting MOST of our calcium from FOOD and WATER,
It's not that difficult to ring your local water provider or check their internet based information or read the label on your bottled water, then do the sums based on your total daily water consumption.
Same with food sources, it may take a bit of time to work out roughly how much yoghurt, cheese, milk fish greens etc. you average daily over the week but it's fairly straightforward.
Milk & yogurt 8 oz 300-450 mg
Cheese 3 oz 300-450 mg
Bones in canned sardines and salmon 3 oz 181-325 mg
Calcium fortified foods (i.e., orange juice, soy milk) 8 oz 200-300mg
Dark green, leafy vegetables 1 cup 100-200 mg
It's then just basic math to add those figures together and subtract from 1200mg/daily to work out how much calcium you need to supplement with.
If the difference between what you are getting from diet and need to supplement with is more than 500mg then it's a matter of seeing how you can improve you dietary intake so you are not needing to take 500mg or more daily.
Remember also that Calcium Carbonate is the supplement form MOST likely associated with problems and the least likely to cause problems is Calcium Citrate/Malate blends code WAB666 $5
introductory discount Looks like they may be cheaper from Vitaminlife
if you can't use the discount code (depending on shipping cost) remember no one should be taking the recommended serving size because you should ALL be getting the greatest amount of calcium from your food/water, and the supplement should only be to make up any shortfall.