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:2/24/2017)... Australia (PRWEB) , ... February 24, 2017 , ... The ... AU) offers Erik Schanssema ’s true account of his paramedic experiences. Schanssema describes ... stress disorder and his attempts to overcome them. , Schanssema, initially unsure of ...
(Date:2/24/2017)... (PRWEB) , ... February 24, 2017 , ... Yisrayl Hawkins, ... focuses on Bible Prophecy concerning this present generation. Yisrayl makes an astounding statement ... current generation. He explains that the Bible details the current times so plainly ...
(Date:2/24/2017)... ... 24, 2017 , ... The Radiology Business Management Association will select ... the annual Building Better Radiology Marketing Programs conference, held this year from ... Texas. Nine awards are given out in five categories. They are:, ...
(Date:2/24/2017)... ... 2017 , ... Castle Farms, the celebrated Northern Michigan ... the winning couple announced on Feb. 14, 2017, on Facebook. The free wedding ... A Matter of Taste, Ryan Rousseau Enterprises, A Touch of Spring and Other ...
(Date:2/23/2017)... , ... February 23, 2017 , ... The 89th Academy ... winner of the 2016 National Education Policy Center Bunkum Award. We invite you to ... 2016. , This year’s Bunkum winner is the Center for American Progress (CAP), for ...
Breaking Medicine News(10 mins):
(Date:2/24/2017)... 2017 Research and Markets has announced the ... - 2016" report to their offering. ... The latest research Urinary Incontinence Drugs ... benchmarks in the global Urinary Incontinence market. The research answers ... key drugs marketed for Urinary Incontinence and their clinical attributes? How ...
(Date:2/23/2017)... Research and Markets has announced the addition of the ... report to their offering. ... The latest research Autism Spectrum Disorder Drugs Price Analysis ... the global Autism Spectrum Disorder market. The research answers the ... drugs marketed for Autism Spectrum Disorder and their clinical attributes? How ...
(Date:2/23/2017)... , Südkorea, 23. Februar 2017 LG ... für Sterilisationsaufgaben vorgestellt. Die Sterilisationsleistung beträgt das 1,5-fache des ... ultraviolette Strahlung im Bereich zwischen 200 und 280 nm und ... von Bakterien, indem es ihre DNA zerstört. Das Produkt ... ...
Breaking Medicine Technology: