HOME >> BIOLOGY >> NEWS
Moderate caffeine use does not increase miscarriage risk but high caffeine use doubles risk

Consuming the amount of caffeine equivalent to that found in one to two cups of coffee does not appear to increase a pregnant woman's chances of having a miscarriage. However, consuming the amount of caffeine contained in five or more cups of coffee a day appears to double miscarriage risk, according to results of a study by researchers at the National Institute of Child Health and Human Development and the University of Utah in Salt Lake City. The study appears in the November 25 issue of the New England Journal of Medicine.

Caffeine and related compounds are found not only in coffee, but also in tea, soft drinks, and chocolate. About 200 milligrams of caffeine are found in one-and-a-half to two cups of brewed coffee or two cups of brewed tea, according to NIH's National Institute of Environmental Health Sciences. (A review of the research on caffeine, fertility, pregnancy, and breast-feeding is available on the NIEHS website: http://cerhr.niehs.nih.gov/genpub/topics/caffeine.html.)

Using a new method to estimate overall caffeine consumption, the researchers analyzed stored blood samples from a large group of women. Specifically, they measured blood levels of paraxanthine, a substance produced when caffeine is broken down by the liver. Caffeine reaches high levels in the blood shortly after consumption, but then plummets a short time later. Because paraxanthine remains in the blood longer--and at more consistent levels--than does caffeine, the investigators believe it is a more accurate barometer of daily caffeine consumption.

"Because many studies of caffeine consumption have relied on self reporting, it has been difficult to gauge the effects of caffeine," said Duane Alexander, M.D., Director of the NICHD. "This research not only shows a risk of miscarriage from consuming large amounts of caffeine, it also provides a valuable research tool for other investigators st
'"/>

Contact: Bob Bock
rb96a@nih.gov
301-496-5133
NIH/National Institute of Child Health and Human Development
23-Nov-1999


Page: 1 2 3 4

Related biology news :

1. Moderate alcohol consumption increases plasma levels of a protective hormone
2. Moderate iron deficiency affects cognitive performance - but iron supplementation improves it
3. Moderate alcohol consumption after meals can decrease levels of insulin
4. Moderate alcohol consumption during pregnancy is risky too
5. Moderate vitamin E supplementation may lower diabetics cardiovascular risk
6. Moderate alcohol consumption increases bone mineral density in elderly women
7. Moderate alcohol consumption may reduce your chances of a heart attack
8. Duke Researchers Finds That Moderate Caffeine Use Boosts Blood Pressure, Potential For Heart Disease
9. Even Moderate Air Pollution Reaching Eastern Wilderness Decreases Mountain Hikers Lung Function
10. No Such Luck: Nitrogen From Air Pollution Unlikely to Moderate Global Warming
11. Why some neonates need caffeine

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/14/2017)... (NYSE: IBM ) is introducing several innovative partner startups ... collaboration between startups and global businesses, taking place in ... nine startups will showcase the solutions they have built with ... France is one of the ... percent increase in the number of startups created between 2012 ...
(Date:5/16/2017)... 16, 2017   Bridge Patient Portal , ... MD EMR Systems , an electronic medical ... GE, have established a partnership to build an ... the GE Centricity™ products, including Centricity Practice Solution ... These new integrations will allow healthcare delivery ...
(Date:4/19/2017)... New York , April 19, 2017 ... competitive, as its vendor landscape is marked by the ... the market is however held by five major players ... Safran. Together these companies accounted for nearly 61% of ... of the leading companies in the global military biometrics ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... platform specifically designed for life science researchers to analyze and interpret datasets, ... Franklin, who made a major contribution to the discovery of the double-helix ...
(Date:10/11/2017)... ... ... Personal eye wash is a basic first aid supply for any work environment, but most ... you rinse first if a dangerous substance enters both eyes? It’s one less decision, and ... unique dual eye piece. , “Whether its dirt and debris, or an acid or alkali, ...
(Date:10/11/2017)... , Oct. 11, 2017  VMS BioMarketing, a leading ... a nationwide oncology Clinical Nurse Educator (CNE) network, which will ... need for communication among health care professionals to enhance the ... nurses, office staff, and other health care professionals to help ... breast cancer. ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... implantation and pregnancy rates in frozen and fresh in vitro fertilization (IVF) ... and maternal age to IVF success. , After comparing the results from the ...
Breaking Biology Technology:
Cached News: