Do steaks make you big?

June 15, 2011, Australian National University

Credit: Footos Van Robin
( -- Adjusting the intake of high protein foods like meat, eggs and milk products could determine whether you become a rugby player or marathon runner and may help you lose weight, according to new research published this month in the Journal of Biological Chemistry.

Dr. Stefan Broer, head of the molecular nutrition group in the ANU College of Medicine, Biology and Environment at The Australian National University, said the study by a group of ANU and Sydney researchers could potentially lead to the development of new weight-loss drugs.

“When it comes to controlling your , everybody thinks about reducing sugar and fat. But we also eat a lot of so we wanted to find out how it influences your body weight,” he said.

To investigate the problem, the team generated mice that could not digest protein as well as a normal mouse and measured a wide variety of physiological and physical properties.

“During digestion, your stomach and intestine breaks down protein into smaller subunits called amino acids,” Dr. Broer said.

“So we focused on mice that could not transport amino acids from the intestine into the cells of the body and therefore could not properly process proteins.

“One of the first things we noticed was that the animals were quite a bit smaller in size than normal mice, which suggests that eating more protein can increase our body size and possibly our sporting potential in the long term.

“When we gave these mice diets of different protein content, we found that they could not control their body weight, losing up to 20% in a couple of days. This indicates that varying protein intake in the short term affects our body weight.”

Dr. Broer said the study also revealed an influence of protein in our nutrition on insulin release, which controls the metabolism of sugar and fat in our bodies.

“This could explain some of the weight loss observed in the animals on different diets because we found that on a high protein diet a significant loss of fat occurred.

“This information may have potential in the future development of weight loss treatments.”

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1.5 / 5 (2) Jun 15, 2011
Wow, some of the worst conclusions of a poor study that I've ever seen.
5 / 5 (2) Jun 15, 2011
Wow, eating protein could help grow muscle? Who would ever have thought it? How about every muscle-head in every gym in the world already knows this? Why is this news? Maybe the article is just poorly written, or I'm missing some subtleties, but this seems obvious.
3 / 5 (1) Jun 15, 2011
To the two meat heads above everyone knows that protein is necessary to build muscles because protein is made of amino acids what they have shown is that a high protein diet SIGNIFICANTLY reduces fat (that is without having to become a gym junkie) and that high protein diets effect insulin production, some thing that needs to be followed up.
Perhaps if the pair of you could develop a few neurons you may be better off as it may allow you to read and understand the articles.
not rated yet Jun 29, 2011
what they have shown is that a high protein diet SIGNIFICANTLY reduces fat.

Actually, weight loss with high protein diets is also well known. Look up any diet recommendation on the internet. The good ones not only recommend high protein for both muscle gain and weight loss but also will supply several references. The influence of protein (rather amino acids) on insulin levels is also well known. Rather, the lack of glucose, sucrose, and fructose. This is not new information.
not rated yet Jul 03, 2011
Very poorly written article.

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