CommunityBrowse groupsBlogEtiquetteInvite Your friendsSuccess Stories


Intestinal Bacteria May Explain Obesity

just read this article and had to share, it makes sense to me

ST. LOUIS (AP) _ The microorganisms that live in your gut could explain one of the sources of obesity, says a new study from researchers at Washington University.

Bacteria live throughout the body, but some intestinal bacteria appear to be better than others at helping their hosts turn food into energy, say researchers Buck S. Samuel and Dr. Jeffrey I. Gordon.

They believe changing the mix of bacteria in the intestine could influence how much people weigh.

Bacteria and archaea, another kind of single-celled organism, are common in the human intestine. Researchers are discovering that together, they help their human hosts extract calories and nutrients from food.

"We know very little about who they are and what they do,'' said Dr. Martin J. Blaser, chair of medicine at New York University.

Samuel decided to investigate that question by inoculating identical mice with different microbes, or a combination of two of the single-celled organisms.

The researchers found mice whose guts were inoculated with just the bacterium Beta thetaiotaomicron (B. theta) could process rodent food better than mice that were given no bacteria.

A second group of mice were inoculated with a combination of B. theta and an archaeon called Methanobrevibacter smithii (M. smithii). Those rodents could extract many more calories from the same amount of food, but they stored the extra energy as excess fat.

The researchers haven't yet concluded whether obese people have more M. smithii in their intestines. But Blaser said he believes scientists could eventually help control human nutrition by manipulating the types of microbes living in the gut.

The results of the study will be published online this week in the Proceedings of the National Academy of Sciences.


Wed. Jun 14, 11:35am

Add comment  
I have a hard time believing this theory. I've never met a really obese person who ate really healthy food all the time. They eat crap (present company included) and hence gain weight. When they start eating healthier food and exercising, they lose weight. Cause and effect. Let's not start giving people an excuse that it's OK that they are obese b/c they have bacteria. Let's live in the era of self responsibility.

Wednesday, June 14, 2006, 7:07 PM

Add comment
I've sen skinny people eat crap and not exercise, I HAVE seen people eat healthy enough and exercise and not lose weight. There are always more factors than calorie intake...

And sometimes, fat people do need more help because their systems are out of whack

Wednesday, June 14, 2006, 8:10 PM

Add comment
Ah, yes, but before we decide this is not true, let's be open to seeing the full story. Perhaps we get out bodies out of wack and some bacterialogical support or adjustment could help.

Wednesday, June 14, 2006, 8:14 PM

Add comment

Explore Related Articles
Weight Loss Motivation   Sustainable Weight Loss
Weight Lifting    Hypnosis and Weight Loss
Emotional Eating   Help Losing Weight
Free Weight Loss Program   Weight Watchers Points  NutriSystem
How To Change Anything

Related Content:

How To Lose Weight- The Basics
Weight Watchers Points System
The Fat Smash Diet
The Eat To Live Diet
The Beck Diet Solution
How To Get The Motivation To Lose Weight


How To Be Successful Using PEERtrainer

How To Burn Fat
Online Weight Loss Support- How It Works
Does Green Tea Help You Lose Weight?
Tips On Using PEERtrainer
Visit The PEERtrainer Community
Diet and Fitness Resources


Weight Watchers Meetings
Learning To Inspire Others: You Already Are
Writing Down Your Daily Workouts
Spending Money On A Personal Trainer?
How I Became A Marathon Runner


Preventive Health

How To Prevent Injuries During Your Workout
Flu Season: Should You Take The Flu Shot?
Are You Really Ready To Start PEERtrainer?
Super Foods That Can Boost Your Energy
Reversing Disease Through Nutrition

New Diet and Fitness Articles:

Weight Watchers Points Plus
How To Adjust Your Body To Exercise
New: Weight Watchers Momentum Program
New: PEERtrainer Blog Archive
Review Of The New Weight Watchers Momentum Program

Weight Loss Motivation by Joshua Wayne:

Why Simple Goal Setting Is Not Enough
How To Delay Short Term Gratification
How To Stay Motivated
How To Exercise With A Busy Schedule

Real World Nutrition and Fitness Questions

Can Weight Lifting Help You Lose Weight?
Are Protein Drinks Safe?
Nutrition As Medicine?

Everyday Weight Loss Tips

How To Eat Healthy At A Party
How To Eat Out And Still Lose Weight
The Three Bite Rule
Tips On How To Stop A Binge