Navigation Links
No link found between caffeine intake and development of hypertension in women

Habitual coffee drinking is not associated with an increased risk of hypertension in women, although an association was found with the consumption of sugared or diet colas, according to a study in the November 9 issue of JAMA.

Approximately 50 million people in the United States have hypertension, and the prevalence is increasing, according to background information in the article. Hypertension is a major risk factor for coronary heart disease, stroke, and congestive heart failure. Therefore, even small reductions in the prevalence of hypertension could have a potentially large public health and financial impact. Several previous studies have indicated a possible association between caffeine intake and the risk of hypertension. Short-term studies have demonstrated that caffeine intake acutely increases blood pressure, but over time, weakening of this effect does occur. A long-term effect of caffeine intake on the risk of developing hypertension would be of substantial public health importance given the widespread consumption of beverages containing caffeine, but currently, studies of this association are scarce.

Wolfgang C. Winkelmayer, M.D., Sc.D., of Brigham and Women's Hospital and the Harvard School of Public Health, Boston, and colleagues conducted a study to determine whether caffeine intake or consumption of certain caffeine-containing beverages is associated with an increased risk of incident hypertension in women. The researchers analyzed data from the Nurses' Health Studies (NHSs) I and II of 155,594 U.S. women free from physician-diagnosed hypertension, who were followed-up over 12 years (1990-1991 to 2002-2003). Caffeine intake and possible confounders were ascertained from regularly administered questionnaires.

Over the 12 years, 19,541 incident cases of physician-diagnosed hypertension were reported in NHS I and 13,536 in NHS II. In both cohorts, no linear association between caffeine consumption and risk of incident hypertens ion was observed after multivariate adjustment. When studying individual classes of caffeinated beverages, habitual coffee consumption was not associated with increased risk of hypertension. By contrast, consumption of cola beverages was associated with an increased risk of hypertension, independent of whether it was sugared or diet cola.

"In this study with more than 1.4 million person-years of follow-up [the number of women in the study times the number of years of follow-up per woman], the relevant exposures and outcomes have been found valid and accurate, and coffee intake was updated to reflect changes in individual behavior. We found strong evidence to refute speculation that coffee consumption is associated with an increased risk of hypertension in women," the authors write.

Concerning the link found between colas and hypertension, the researchers write: "? we speculate that it is not caffeine but perhaps some other compound contained in soda-type soft drinks that may be responsible for the increased risk in hypertension. If these associations are causal, they may have considerable impact on public health."


'"/>

Source:JAMA and Archives Journals


Related biology news :

1. New component of the brakes on nerve regeneration found
2. Strongest proof yet found for prion hypothesis
3. A puzzle piece found in unraveling the wiring of the brain
4. New World founders small in number
5. Norovirus found to cause travelers diarrhea
6. Pair of cancer genes found to drive both cell migration and division
7. Alien woodwasp, threat to US pine trees, found in N.Y.
8. Achilles heel of the herpes virus possibly found
9. Purdue scientists may have found key to halting spinal cord damage
10. Unexpected lock and key mechanism found for the assembly of tumor blood vessels
11. New protein vital for immune response is found in surprise location
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/13/2016)... 2016  IMPOWER physicians supporting Medicaid patients in ... clinical standard in telehealth thanks to a new partnership ... platform, IMPOWER patients can routinely track key health measurements, ... index, and, when they opt in, share them with ... a local retail location at no cost. By leveraging ...
(Date:3/22/2016)... , March 22, 2016 ... report "Electronic Sensors Market for Consumer Industry by Type ... Others), Application (Communication & IT, Entertainment, Home ... Global Forecast to 2022", published by MarketsandMarkets, ... expected to reach USD 26.76 Billion by ...
(Date:3/15/2016)... , March 15, 2016 ... report published by Transparency Market Research "Digital Door Lock Systems ... Forecast 2015 - 2023," the global digital door lock systems ... Mn in 2014 and is forecast to grow at a ... of micro, small and medium enterprises (MSMEs) across the world ...
Breaking Biology News(10 mins):
(Date:5/25/2016)... (PRWEB) , ... May 25, 2016 , ... Lady had ... she tore her cruciate ligament in her left knee. Lady’s owner Hannah sought the ... central Florida board-certified veterinary surgeon, to repair her cruciate ligament and help with the ...
(Date:5/24/2016)... ... May 24, 2016 , ... Media ... The new Media Cybernetics corporate branding reflects a results-driven revitalization for a company ... analysis. The re-branding components include a crisp, refreshed logo and a new web ...
(Date:5/23/2016)... and LONDON , May 23, 2016 ... Could See Frontage Boost Efficiency by 40% - Frontage ... - Frontage Enforce Quality, Compliance and Traceability Within the Bioanalytical ... with labs in the United States and ... to be deployed across its laboratory facilities. In addition to ...
(Date:5/20/2016)... ... May 20, 2016 , ... Kablooe Design, a leading provider of product ... official 25th anniversary of the business. “We have worked hard to build long-term relationships,” ... for the privilege and honor of serving their product design and development needs through ...
Breaking Biology Technology: