Thu, Mar-25-10, 10:13
|
 |
Experimenter
Posts: 25,878
|
|
Plan: DDF
Stats: 202/185.4/179
BF:
Progress: 72%
Location: San Diego, CA
|
|
Calcium supplements linked to heart disease
I'm finding more and more references to this issue. I think what happens is your body doesn't make good use of them, rather than depositing the calcium in your bones it is being deposited in the arteries. Maybe due to not enough vitamin K/K2. If you have enough D3 then you don't need to mega-dose calcium. I also think if you're not eating grains and legumes you don't have the issue of the lectins in those things binding to the calcium in the food you eat, so you might be absorbing more from food. So think twice before supplementing calcium.
This quote comes from a newsletter sent out by the Vit. D Council, so it might be in their archives.
Quote:
Bolland MJ, et al. Vascular events in healthy older women receiving calcium supplementation: randomised controlled trial. BMJ. 2008 Feb 2;336(7638):262-6.
They found 1800 mg/day of calcium may well do harm, with apparent increased rates of cardiovascular disease. However, they excluded anyone with frank vitamin D deficiency, exactly the patients who may benefit the most from extra calcium. (The extra calcium may decrease renal metabolic clearance of the little vitamin D such patients have.) The real problem came when they tried to verify the reported cardiovascular events with the national database in New Zealand; their findings were then of marginal significance (P=.05).
The authors noted that previous studies of total calcium intake (both diet and supplements), such as the Boston Nurses Study or the Iowa Women’s Health Study have both found that women with the highest total calcium intake had either the lowest death rates or the lowest cardiovascular disease. That said, it seems it is better to get your calcium from your diet and not from a pill, always a good rule.
This is a good time to say that vitamin D sufficient adults need about 1,000 mg of calcium a day from all sources, including diet and supplements and even that recommendation is based largely on studying vitamin D deficient people. In my opinion, no vitamin D sufficient person should be taking 1,000 mg of calcium/day in supplements, unless they get zero from their diet, pretty difficult to do. Bolland MJ, et al. Vascular events in healthy older women receiving calcium supplementation: randomised controlled trial. BMJ. 2008 Feb 2;336(7638):262-6.
|
|
Linear Mode
