Navigation Links
Too Much Coffee in Pregnancy Tied to Smaller, Later Newborns, Study Says

By Steven Reinberg
HealthDay Reporter

MONDAY, Feb. 18 (HealthDay News) -- The coffee or other caffeinated beverages a woman drinks during her pregnancy might up the odds for a low birth weight newborn or an extended pregnancy, a new study says.

The researchers included data on nearly 60,000 Norwegian women.

"As the risk for having a low birth weight baby was associated with caffeine consumption, pregnant women might be counseled to reduce their caffeine intake during pregnancy as much as possible," said lead researcher Dr. Verena Sengpiel, an obstetrician/gynecologist at the Sahlgrenska Academy of Sahlgrenska University in Goteborg, Sweden.

She believes the findings should also spur a re-evaluation of current recommendations from the American College of Obstetricians and Gynecologists, which advises that a pregnant woman's caffeine intake not exceed two cups of coffee per day.

However, because the study was observational in nature, it can't establish a cause-and-effect relationship between caffeine and low birth weight, Sengpiel stressed. "We cannot say from our data whether caffeine is the specific substance responsible for the fetus being at greater risk of [becoming a] low birth weight infant, nor did we study if these babies actually had special health problems during the neonatal period," Sengpiel said.

The report was published online Feb. 18 in the journal BMC Medicine.

In the study, Sengpiel's team accounted for all sources of caffeine, including coffee, tea, sodas and food including cocoa (such as is found in desserts and chocolate), for almost 60,000 pregnancies tracked by the Norwegian Institute of Public Health.

They found that while caffeine was not linked to premature birth, caffeine from all sources was tied to a higher risk for reduced birth weight.

For example, if an infant's weight is expected to be 7 pounds 15 ounces, every 100 milligrams of caffeine consumed by its mother a day reduced a newborn's weight by almost an ounce, the researchers reported.

According to the Mayo Clinic, the average cup of American-style brewed coffee contains between 95 and 200 milligrams (mg) of caffeine.

Moreover, every 100 mg of caffeine consumed per day increased the length of pregnancy by five hours. And when the caffeine came from coffee (as opposed to other sources) the length of pregnancy was extended eight extra hours, the study authors found.

Given this finding, it is likely that it is not only the caffeine, but something else in coffee that is acting to extend pregnancy, the researchers added.

Dr. Jennifer Wu, an obstetrician/gynecologist at Lenox Hill Hospital in New York City, said, "Other studies have indicated that caffeine can affect fetal weight, so this is in accord with findings of other studies."

Why caffeine might cause this effect is unclear, she said.

"We do know that caffeine crosses the placenta and the baby is not able to metabolize it very well, [so] it may affect some of the factors associated with growth," Wu theorized.

She advised that women limit the amount of caffeine they consume during pregnancy. The World Health Organization says 300 mg a day, but in the United States the recommended amount is 200 mg a day, she added.

Wu noted that is the amount of caffeine in two small cups of coffee, not a "Starbucks size coffee." There is less caffeine in a cup of tea, or a piece of chocolate, which has about 35 mg of caffeine, she said.

More information

For more information on low birth weight infants, visit the March of Dimes.

SOURCES: Verena Sengpiel, M.D., Ph.D., department of obstetrics and gynecology, Sahlgrenska Academy, Sahlgrenska University, Goteborg, Sweden; Jennifer Wu, M.D., obstetrician/gynecologist, Lenox Hill Hospital, New York City; Feb. 18, 2013, BMC Medicine, online

Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Muscular Development Store Comments on Article Suggesting Adding Coffee to Your Pre-Workout Routine
2. New Health Benefits of Water Report Now Available at
3. Inside a machine for turning coffee into science
4. Atlanta LASIK Surgery Center Publishes Response to Correlation Between Coffee Consumption and Glaucoma
5. Used coffee grounds are a rich source of healthful antioxidants
6. Coffee & Snack Shops in the US Industry Market Research Report Now Available from IBISWorld
7. Author/Designer Perla Lichi Links Her Coffee Table Book "Palaces" With Upcoming On-Line Training Course
8. Coffee May Lower Risk of Death From Mouth Cancer: Study
9. Caffeinated coffee may reduce the risk of oral cancers
10. New L-Carnitine and Green Coffee Bean Supplement, L-Carnitine Plus Now Available
11. Moderate coffee consumption may reduce risk of diabetes by up to 25 percent
Post Your Comments:
Related Image:
Too Much Coffee in Pregnancy Tied to Smaller, Later Newborns, Study Says
(Date:11/25/2015)... ... ... The holiday season is jam-packed with family dinners, parties ... is of the utmost importance. Whether you are cooking at home for the ... try this holiday season. , Turkey Croquettes ,     Ingredients: , ...
(Date:11/25/2015)... ... November 25, 2015 , ... Dr. John Pierce, Medical Director at the ... loss treatment with the Capillus272™ Pro laser therapy cap. FDA cleared for safety and ... hair, without the need for surgery, prescription pills, or topical foams. , “Capillus272™ ...
(Date:11/25/2015)... , ... November 25, 2015 , ... According to an ... robot is being more and more widely heralded as a breakthrough for performing hernia ... method has over traditional laparoscopic surgery is that it can greatly reduce the pain ...
(Date:11/25/2015)... (PRWEB) , ... November 25, 2015 , ... ... for physicians and athletic programs, launches new Wimbledon Athletics Facebook page ... testing young athletes for unsuspected cardiac abnormalities. About 2,000 people under the age ...
(Date:11/25/2015)... ... November 25, 2015 , ... SCOTTSDALE, ... facial plastic surgeon specializing in both surgical and non-surgical treatments, announced the expansion ... at Hobgood Facial Plastic Surgery. , Highly trained and nationally recognized for ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... 26, 2015 Un nuevo enfoque ... para el cáncer avanzado.   --> ... fotodinámica de Bremachlorin para el cáncer avanzado.   ... inmunoterapia con la terapia fotodinámica de Bremachlorin para el ... . --> Clinical Cancer Research . ...
(Date:11/26/2015)... 26, 2015 Research and Markets ( ) ... Pacemaker Market Outlook to 2019 - Rise in Cardiac Disorders ... report to their offering. Boston ... Boston scientific and others. --> ... Biotronik, Boston scientific and others. ...
(Date:11/26/2015)... , November 26, 2015 ... addition of the "2016 Future Horizons ... of Abuse Testing Market: Supplier Shares, Country ... report to their offering. --> ... the "2016 Future Horizons and Growth ...
Breaking Medicine Technology: