Firstborns Face Greater Obesity Risk

Tuesday, 11 Feb 2014 05:03 PM

By Nick Tate

Share:
  Comment  |
   Contact Us  |
  Print  
|  A   A  
  Copy Shortlink
Being a firstborn son may carry some social and cultural advantages, but that status also comes with some significant disadvantages when it comes to health, new research suggests. A small study of middle-age men in New Zealand has found that firstborns are more likely to be overweight and at risk for diabetes.
 
According to a Medical Xpress report on the study, researchers from the University of Auckland who tracked several groups of brothers found the oldest men in the family tended to weigh more (averaging more than 200 pounds) than their younger siblings (average weight: 185), even when the men were the same height. 
 
The older brothers also had higher BMIs — 29.1 for the firstborns and 27.5 for the seconds. In addition, they tended to have higher amounts of body fat (older brothers averaged 32.2 percent body fat, compared with 29.9 percent for the younger).

There were also differences in insulin sensitivity, which was 33 percent lower in the firstborn men than the younger brothers. (When the body doesn't properly respond to insulin, it can lead to diabetes, heart disease and obesity.)

The researchers speculated that something may happen in the womb that makes firstborns more vulnerable to metabolic problems. First pregnancies cause changes in certain arteries in the uterus that may affect blood flow to the fetus, and those changes are permanent. That means firstborns don't get the benefit of these changes, but second children do.

The findings were published in the journal Scientific Reports.

© 2014 NewsmaxHealth. All rights reserved.

Share:
  Comment  |
   Contact Us  |
  Print  
  Copy Shortlink
Around the Web
Comments
Please review Community Guidelines before posting a comment.
>> Register to share your comments with the community.
>> Login if you are already a member.
blog comments powered by Disqus
 
Email:
Retype Email:
Country
Zip Code:
Privacy: We never share your email.
 
Find Your Condition
You May Also Like
Around the Web
Most Commented

The information presented on this website is not intended as specific medical advice and is not a substitute for professional medical treatment or diagnosis. Read Newsmax Terms and Conditions of Service.

Newsmax, Moneynews, and Independent. American. are registered trademarks of Newsmax Media, Inc. Newsmax TV, NewsmaxWorld, NewsmaxHealth, are trademarks of Newsmax Media, Inc.

NEWSMAXHEALTH.COM
© Newsmax Media, Inc.
All Rights Reserved