Navigation Links
Do birth control pills cause weight gain? New research says no
Date:1/19/2011

PORTLAND, Ore. According to research conducted at the Oregon National Primate Research Center at Oregon Health & Science University, the commonly held belief that oral contraceptives cause weight gain appears to be false. The results of the study are published online and will appear in next month's edition of the journal Human Reproduction.

"A simple Google search will reveal that contraceptives and the possibility that they may cause weight gain is a very highly debated topic," said Alison Edelman, M.D., a physician and researcher in the Department of Obstetrics and Gynecology at OHSU and lead author of the study.

"Issues surrounding weight are hard to study in humans, and the research thus far has been insufficient to demonstrate whether or not oral contraceptives cause weight gain or loss. But this is an extremely important question as concern about weight gain is one of the main reasons why women may avoid or discontinue birth control, which in turn places them at greater risk for an unplanned pregnancy."

To conduct their research, scientists and physicians studied a group of rhesus macaque monkeys at the OHSU Oregon National Primate Research Center for almost a year. Rhesus monkeys were used in this study because their reproductive system is nearly identical to humans. However, unlike human studies, more variables can be controlled and measured such as exact food intake - to provide more meaningful data.

At the beginning of the study, half the animals were obese and half were normal weight. During the eight-month treatment period, animals received doses of oral contraceptives, adjusted to the weight of the animals so that it mimicked dosage in humans. Researchers tracked weight, food intake, activity levels, body fat and lean muscle mass. At the study's conclusion, the normal weight group remained weight stable whereas the obese group lost a significant amount of weight (8.5%) and percent of body fat (12%) due to an increase in basal metabolic rate. No changes were seen in food intake, activity or lean muscle mass for either group.

"This study suggests that worries about weight gain with pill use appear to be based more on fiction than on fact," said Judy Cameron, Ph.D., senior author of the paper and a researcher at the primate center.

"Additionally, there may be a differential affect depending on your starting weight heavier individuals who keep their diet stable may see a weight loss with pill use. Most likely, the reason why this belief continues to exist is that the weight gain that seems to occur with age is being attributed to these medications. We realize that research in nonhuman primates cannot entirely dismiss the connection between contraceptives and weight gain in humans, but it strongly suggests that women should not be as worried as they previously were."


'/>"/>

Contact: Jim Newman
newmanj@ohsu.edu
503-494-4158
Oregon Health & Science University
Source:Eurekalert

Related medicine news :

1. True Signs of Autism May Not Appear Until 1st Birthday
2. UAB-led study shows simple steps could reduce stillbirths by up to 1 million
3. March of Dimes Provides $2.6 Million in New Funding for Preterm Birth Research
4. Experts call for acceleration of research and interventions for prematurity and stillbirth
5. Black Women at Higher Risk of Birth-Related Heart Problem
6. HIV drug that protects a fetus should be avoided for one year after childbirth, researchers say
7. Successful treatment of periodontal disease lowered preterm birth incidences
8. Improving care for low-birth-weight infants
9. Treating Gum Disease May Thwart Preterm Births
10. Ford CEO Asks Nation to March to Prevent Preterm Birth
11. Amnesty International Urges Congress to Turn Attention to Needed Reforms on Maternal and Childbirth Care
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/25/2017)... ... July 25, 2017 , ... Facing medical needs with a newborn boy ... advantage of a new benefit for employees that is uncommon in American business: 12 ... company supports me and other employees as new parents. It keeps our family life ...
(Date:7/25/2017)... ... ... SignatureCare Emergency Center – South Austin is treating both adult and pediatric patients ... The Emergency Room opened early March, making it the first SignatureCare Emergency ... are running smoothly,” said Aaron Braun, SignatureCare Emergency Center’s Chief Medical Officer. “We’re glad ...
(Date:7/24/2017)... ... July 24, 2017 , ... Contact: ... Robins & Morton, Perkins Will, Newcomb & Boyd, Walter P Moore and ... new Destination Medical Building located at Mayo Clinic in Jacksonville, Florida. , ...
(Date:7/24/2017)... (PRWEB) , ... July 24, 2017 , ... SignatureCare ... scholarship will be awarded for the fall semester to a deserving student. Get ... Centers Spring 2017 scholarship was awarded to Mariana Castillo who is a nursing student ...
(Date:7/24/2017)... ... July 24, 2017 , ... BayMark Health Services has been ... Administration’s (SAMHSA) State Targeted Response to the Opioid Crisis program. The funding, ... the development of a hub and spoke model for opioid treatment in California. ...
Breaking Medicine News(10 mins):
(Date:7/17/2017)... , July 17, 2017  MedX Holdings, Inc., the ... testing, strengthening and rehabilitation equipment, today announced the national ... MedX is considered the gold standard for the treatment ... specialized medical strengthening equipment. ... with the physician or practice who prescribe the MedX ...
(Date:7/13/2017)... 13, 2017 RK Logistics Group, Inc. was awarded ... for its Fremont, CA headquarters facility ... Tri-Valley and San Jose for hi-tech, ... Fremont , with its Fremont Innovation District, is excited ... a powerful resource to the hundreds of biotech, pharma and ...
(Date:7/11/2017)... , July 11, 2017  Bayer has awarded grants ... countries as part of its prestigious Bayer Hemophilia Awards Program ... of Philadelphia and Uniformed Services University ... are among the winners. Grant recipients were announced last night ... Hemostasis (ISTH) 2017 Congress, Berlin, Germany . ...
Breaking Medicine Technology: