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Training & Nutrition Learn how to develop a training schedule that's good for you. What should you eat and drink on your ride? Learn everything you need to know about training and nutrition here.

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Old 01-16-08, 09:33 PM   #1
Machka 
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Just when we thought calcium was good ...

http://www.cbc.ca/story/health/natio...ium-study.html

"As women age, they are commonly told to take a calcium supplement to prevent bone loss and fractures — but for some, that simple advice could lead to an increased risk of heart attack.

Many older women take calcium supplements to prevent thinning bones. But medical researchers at the University of Auckland in New Zealand have found that women who take 1,000 milligrams of calcium each day may have an increased risk of having a heart attack.

............. "
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Old 01-16-08, 11:28 PM   #2
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Good post...

http://www.nhs.uk/News/2007/January0...heartrisk.aspx
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Old 01-17-08, 01:17 AM   #3
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My own belief is that these "older" women need bioidentical estrogen with the Ca. But this is a hot debate and Dr Oz, vice chair of cardiac surgeon at Columbia details the numbers in a very nicely done chart for anyone interested. I cannot provide the link, but it is in his newest book.
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Old 01-17-08, 06:35 AM   #4
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Don't trust news agencies for interpreting studies they do a horrible job at it. Here is the actual article they are talking about.

http://www.bmj.com/cgi/content/full/...40.525752.BEv1
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Old 01-17-08, 08:20 AM   #5
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Takes more than just the intake of calcium to effect osteoporosis. Weight bearing exercise helps because the body determines that the bones need to be strengthened. Otherwise, that calcium will be used in other ways by the body, and as stated before, hypercalcemia can lead to a heart attack.
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Old 01-17-08, 08:40 AM   #6
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sitting on your butt is more cause for heart attack than any other thing

you need to take in all the factors of that study, which is lacking

were the women athletes ? what are all the other health and age factors x infinity ?

just another useless study
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Old 01-17-08, 09:48 AM   #7
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If you were to test multiple factors all at one time, it would make for a messy study. People like to maximize their publications so I'm sure they have plenty of new experiments lined up.

Plus people are still looking for that x factor where you don't have to get off your butt and do anything to stay healthy.
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Old 01-17-08, 10:46 AM   #8
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This is a study that does not, and admits that there is not statistical significance in its findings, it is just the media having a slow news day.
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Old 01-17-08, 05:47 PM   #9
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Looks like we'll need big pharma drugs now.
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Old 01-17-08, 06:11 PM   #10
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Dark leafy greens.
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Old 01-17-08, 06:13 PM   #11
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Looks like we'll need big pharma drugs now.
All along I thought you were a 17 year old boy! I had no idea you were an "older" woman!!
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Old 01-22-08, 01:22 PM   #12
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well according to the scientific community EVERYTHING WILL KILL YOU!!!!!
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Old 01-22-08, 01:45 PM   #13
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well according to the scientific community EVERYTHING WILL KILL YOU!!!!!
no kidding. everything good has been deemed bad but WAIT it is good for you now

no wait, bad again


ad infinitum
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Old 01-24-08, 11:23 AM   #14
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Takes more than just the intake of calcium to effect osteoporosis. Weight bearing exercise helps because the body determines that the bones need to be strengthened. Otherwise, that calcium will be used in other ways by the body, and as stated before, hypercalcemia can lead to a heart attack.
Adequate levels of vitamin D are essential for bone strength.

Vitamin D regulates calcium absorption and excretion, especially when calcium intake is low. Sunlight is required for vitamin D synthesis. Many people work indoors, therefore they do not spend much time in the sun, therefore their vitamin D levels are likely to be low unless their dietary intake of vitamin D is adequate.

A 2003 report from the Nurses Health Study showed vitamin D to be more important than calcium intake for preventing hip fractures in postmenopausal women (1).


1. Feskanich D, Willett WC, Colditz GA. Calcium, vitamin D, milk consumption, and hip fractures: a prospective study among postmenopausal women. Am J Clin Nutr. 2003 Feb;77(2):504-11

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Old 01-25-08, 05:32 PM   #15
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well according to the scientific community EVERYTHING WILL KILL YOU!!!!!
It will. It's just a question of when.
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Old 01-28-08, 12:56 PM   #16
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Vitamin D, not only for Ca Absorption, but also for the secretion of insulin, and periodontal diseases. Def. a good thing to get adequate amounts of. but beware too much of vitamin D can tax the heart.

one thing to watch out for...Grapefruit. The acid of only grapefruit (no other citric fruits linked) can change the metabolism and effect of medications and can hinder calcium absorption. Also linked with many women-specific and favored cancers (breast, ovarian, cervical).

food for thought

comes down to knowing your DRI of ALL nutrients and to start early enough not to "overload" your system and push those kidneys. many nutrients work in conjunction to absorb the necessary macro and micro nutrients (Vitamin C & Iron, Calcium and D, Amino Acids)
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Old 01-28-08, 04:45 PM   #17
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I've never heard about that before. What is the acid in grapefruit that is different to the acid in other citrus fruits?

I read that Vitamin D deficiency is also linked to depression... hence the winter blues
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Old 01-28-08, 09:26 PM   #18
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It seems to be compounds called Furanocoumarins. They interact with liver enzymes and interfere with drug metabolism.

https://secure.pharmacytimes.com/lessons/200303-02.asp
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Old 01-29-08, 12:50 PM   #19
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Thanks
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Old 01-29-08, 07:12 PM   #20
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Here is a news report on a study on vitamin D, calcium and bone density.

Quote:
Reuters Health

Friday, January 25, 2008

NEW YORK (Reuters Health) - In elderly women, adding vitamin D to regular calcium supplements produces long-term improvements in hip bone density, researchers report.

To evaluate the relative benefits of calcium with or without vitamin D on bone health, Dr. Richard Prince, at the University of Western Australia, Perth, assigned 120 women to take 1200 milligrams of calcium daily along with an inactive placebo pill or a vitamin D tablet, or two placebo tablets.

The women were between 70 and 80 years old. After 1 year, bone mineral density at the hip was preserved in the calcium group and the calcium+vitamin D group, but not in the double-placebo "control" group.

However, at 3 and 5 years, only the group that got calcium plus vitamin D group maintained hip bone density, the investigators report in the Journal of Clinical Endocrinology and Metabolism.

They conclude that adequate levels of vitamin D are necessary for calcium to do its job in keeping bones healthy.

SOURCE: Journal of Clinical Endocrinology and Metabolism, online January 17, 2008.

Reuters Health

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is a link to the PDF article
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