Featured Research

from universities, journals, and other organizations

Calcium supplements linked to increased risk of heart attack, study finds

Date:
July 30, 2010
Source:
BMJ-British Medical Journal
Summary:
Calcium supplements, commonly taken by older people for osteoporosis, are associated with an increased risk of a heart attack, a new study finds.

Calcium supplements, commonly taken by older people for osteoporosis, are associated with an increased risk of a heart attack, finds a study published online in the British Medical Journal.

The results suggest that a reassessment of the role of calcium supplements in osteoporosis management is needed.

Calcium supplements are commonly prescribed for skeletal health, but a recent trial suggested they might increase rates of heart attack (myocardial infarction) and cardiovascular events in healthy older women.

To further investigate this important issue, an international team of researchers analysed the results of 11 randomised controlled trials of calcium supplements (without co-administered vitamin D) involving 12,000 patients.

Differences in study design and quality were taken into account to minimise bias.

They found that calcium supplements were associated with about a 30% increased risk of heart attack and smaller, non-significant, increases in the risk of stroke and mortality.

The findings were consistent across trials and were independent of age, sex, and type of supplement.

Although the increase in risk is modest, the widespread use of calcium supplements means that even a small increase might translate into a large burden of disease in the population, warn the authors.

Previous studies have found no increased cardiovascular risks with higher dietary calcium intake, suggesting that the risks are restricted to supplements.

Given the modest benefits of calcium supplements on bone density and fracture prevention, a reassessment of the role of calcium supplements in osteoporosis management is warranted, they conclude.

An accompanying editorial by Professor John Cleland and colleagues suggests that, while uncertainty exists about whether the increase in heart attack and stroke is real, there are also doubts about the efficacy of calcium supplements in reducing fractures. On the basis of the limited evidence available, patients with osteoporosis should generally not be treated with calcium supplements, either alone or combined with vitamin D, unless they are also receiving an effective treatment for osteoporosis for a recognised indication. They also believe that research on whether such supplements are needed as an adjunct to effective agents is urgently required.


Story Source:

The above story is based on materials provided by BMJ-British Medical Journal. Note: Materials may be edited for content and length.


Cite This Page:

BMJ-British Medical Journal. "Calcium supplements linked to increased risk of heart attack, study finds." ScienceDaily. ScienceDaily, 30 July 2010. <www.sciencedaily.com/releases/2010/07/100729191154.htm>.
BMJ-British Medical Journal. (2010, July 30). Calcium supplements linked to increased risk of heart attack, study finds. ScienceDaily. Retrieved September 16, 2014 from www.sciencedaily.com/releases/2010/07/100729191154.htm
BMJ-British Medical Journal. "Calcium supplements linked to increased risk of heart attack, study finds." ScienceDaily. www.sciencedaily.com/releases/2010/07/100729191154.htm (accessed September 16, 2014).

Share This



More Health & Medicine News

Tuesday, September 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

EU Ministers and Experts Meet to Discuss Ebola Reponse

EU Ministers and Experts Meet to Discuss Ebola Reponse

AFP (Sep. 15, 2014) The European Commission met on Monday to coordinate aid that the EU can offer to African countries affected by the Ebola outbreak. Duration: 00:58 Video provided by AFP
Powered by NewsLook.com
Despite The Risks, Antibiotics Still Overprescribed For Kids

Despite The Risks, Antibiotics Still Overprescribed For Kids

Newsy (Sep. 15, 2014) A new study finds children are prescribed antibiotics twice as often as is necessary. Video provided by Newsy
Powered by NewsLook.com
FDA Eyes Skin Shocks Used at Mass. School

FDA Eyes Skin Shocks Used at Mass. School

AP (Sep. 15, 2014) The FDA is considering whether to ban devices used by the Judge Rotenberg Educational Center in Canton, Massachusetts, the only place in the country known to use electrical skin shocks as aversive conditioning for aggressive patients. (Sept. 15) Video provided by AP
Powered by NewsLook.com
Respiratory Virus Spreads To Northeast, Now In 21 States

Respiratory Virus Spreads To Northeast, Now In 21 States

Newsy (Sep. 14, 2014) The respiratory virus Enterovirus D68, which targets children, has spread from the Midwest to 21 states. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins