Feeds

Caffeine doubles miscarriage risk

Lay off the coffee, pregnant women advised

The smart choice: opportunity from uncertainty

Pregnant women have been warned to lay off the coffee after US researchers found that those who "drink two or more cups of coffee a day have twice the risk of having a miscarriage as those who avoid caffeine".

The study led by Dr De-Kun Li of Kaiser Permanente Division of Research, which appears in the American Journal of Obstetrics and Gynecology, concludes that an intake of 200 milligrams or more per day, representing two or more cups, "significantly increases the risk of miscarriage".

Li told Reuters: "There has been a lot of uncertainty about this. There was no firm advice from professional societies to say what a pregnant woman should do about caffeine intake."

He duly cautioned: "Women who are pregnant or are actively seeking to become pregnant should stop drinking coffee for three months or hopefully throughout pregnancy."

Li explained that while other studies have demonstrated a link between caffeine and miscarriage, the link had been "clouded by the fact that many pregnant women avoid caffeine because it makes them nauseated, which could skew the results".

Accordingly, Li and his team legislated for that possibility during their study of 1,063 pregnant women who were members of the Kaiser Permanente health plan in San Francisco from October 1996 to October 1998, and who "never changed their caffeine consumption during pregnancy".

The link between caffeine and misscarriage may be, according to Li, that the chemical stresses the unborn child's immature metabolism and possibly decreases blood flow in the placenta.

Dr Tracy Flanagan, director of women's health at Kaiser Permanente Northern California, backed Li's call to cut out the coffee, concluding: "So many causes of miscarriage are not controllable. This is an opportunity to do something active." ®

The Power of One Infographic

More from The Register

next story
World Solar Challenge contender claims new speed record
One charge sees Sunswift travel 500kms at over 100 km/h
SMELL YOU LATER, LOSERS – Dumbo tells rats, dogs... humans
Junk in the trunk? That's what people have
The Sun took a day off last week and made NO sunspots
Someone needs to get that lazy star cooking again before things get cold around here
Boffins discuss AI space program at hush-hush IARPA confab
IBM, MIT, plenty of others invited to fill Uncle Sam's spy toolchest, but where's Google?
Bad back? Show some spine and stop popping paracetamol
Study finds common pain-killer doesn't reduce pain or shorten recovery
Forty-five years ago: FOOTPRINTS FOUND ON MOON
NASA won't be back any time soon, sadly
Jurassic squawk: Dinos were Earth's early FEATHERED friends
Boffins research: Ancient dinos may all have had 'potential' fluff
prev story

Whitepapers

Top three mobile application threats
Prevent sensitive data leakage over insecure channels or stolen mobile devices.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.