Archive for the ‘Weight Loss’ Category

Gluten-free diets for weight-loss? Not unless you've got Celiac Disease!

Tuesday, August 24th, 2010

We know several people who are on gluten-free diets for Celiac Disease (CD), but until this morning I hadn't been aware that others regarded this as a weight-loss method. So let's go back to what gluten is and what problems it causes.

Basically gluten is a protein from three grains, wheat, barley and rye. It's often found in baked goods. Many people, in fact apparently an increasing number of people, are sensitive to gluten and should avoid consuming gluten-containing products. An article in the Journal "Gastroenterology" July 2009 by a Mayo Clinic group headed by Dr. Joseph Murray found a four-fold increase in undiagnosed CD between groups tested ~1950 and current age-matched groups.

But it's considerably more complicated than that. Some people are extremely sensitive to gluten. If they ingest it in any form, and gluten is ubiquitous, found in lip gloss, on envelope flaps, in soy sauce and ketchup, they develop an autoimmune reaction and are said to have Celiac Disease. Three million Americans are felt to have this entity which can lead to a multitude of very serious complications.

But, like those of us who say we're lactose sensitive, there are at least three varieties of what people think of as gluten sensitivity. Perhaps twenty million in the US are felt to have milder gluten issues without full-blown Celiac Disease; not a lot is known about this group. In a similar fashion, I'm lactose intolerant, but, I can drink a small amount of milk without developing major problems.

Then there's a smaller number who are actually allergic to something in wheat and can develop severe symptoms, including asthma or shock, after eating wheat products. Again, I know individuals who, after drinking milk, end up with severe problems; they're actually allergic to another milk protein.

So recently there's been a host of gluten-free products developed; those are very helpful and appropriate for people with CD, but others have seized upon the concept of using these foods as a weight-loss tool. The short answer is Don't! Many of the new gluten-free food products are high in carbs, fat and calories and relatively low in fiber, iron and vitamins.

There's an excellent review of CD in "Scientific American, July 27,2009, that I was able to print out from an online source. The author is Dr. Alessio Fasano who heads the University of Maryland Center for Celiac Research. His group has found a substance called zonulin that increases gut permeability and is working with tests for an antibody that may be a biomarker for gluten sensitivity.

So the gluten-free diet may not be the only answer for patients with CD and researchers are working hard to find other treatments. In the meantime, for the rest of us, that diet is clearly not the way to lose weight.

Blog ahead in Spring...

Sunday, April 18th, 2010

We'll be heading down to Colorado Springs on Thursday for the Pikes Peak Writers Conference (and my 69th birthday dinner with cousins). So instead of writing blog posts on Tuesday and Friday, as I normally do, this week I decided to "blog ahead."

Two articles in our local paper got my attention recently. One I'll pair with an article and also with an accompanying editorial comment from the Annals of Internal Medicine, but that can wait till Wednesday as I've not yet fully digested (no pun intended) the dietary advice from the three sources.

Today I wanted to mention a local initiative from the Food Bank for Larimer County, one of our favorite non-profits. I've worked volunteer shifts there when I belonged to a Rotary Club and my wife and I always give the Food Bank one of our larger yearly donations when we start figuring out what we can manage to give to charities.

The organization's director, Amy Pezzani, said in the paper that the Food Bank had 32,000 more visits in 2009 than in 2008. One fifth of our kids in the county are receiving food through schools, food stamps or the Food bank itself.

Yet data collected by other groups says that in that same time period, more than half of our Larimer County residents fall into the overweight and obese groups and one fourth of our students in the K-12 category (I didn't see any statistics for Colorado State University students).

Now the Food Bank has combined their need for more food with our region's excess weight issue. A national TV show gave the local folk the idea of a "Pound for Pound Challenge and Pezzani and her crew have gotten over 700 local residents to pledge to lose nearly 20 pounds each by July. So far, they were up to a 13,000-pound pledge and they're aiming at 50,000 pounds.

Each participant joins the challenge by registering online with a local ZIP code and gives the Food Bank a small donation equivalent to the number of pounds they plan to lose. Pezzani said the 50,000 pound goal would be the the equivalent of two truckloads of food. At the time the article was written, Colorado was ranked 12th in the country in the contest with 135,000 pounds being pledged and Larimer County was third in the state.

Talk about a win-win situation. This idea should be publicized even more widely than it already has. Spread the word.

There's fat and then there's fat

Tuesday, April 13th, 2010

For the past few years I've heard passing references to brown fat and white fat, but never understood the difference between them. Today I read The Wall Street Journal's "Personal Journal" section and saw an article that finally clarified the two kinds of fat for me. It also led me to believe there may be developments coming in the field that could potentially (lots of qualifiers there) help our obese and overweight population.

So let's go back to the kinds of fat. Brown fat is different from the kind we tend to accumulate arround our mid-sections as adults if we eat too much and/or exercise too little. It's actually brown in color, found in babies, and contains lots of the heat-producing little cellular "engines" called mitochondria. Little kids are more at risk for hypothermia than adults, so they have more brown fat as a protective mechanism.

Can we use this natural calorie-burning mechanism when we're overweight? In a variety of places researchers are attempting to solve this question. One mechanism for revving up brown fat, at least in mice, appears to be exposure to cold. Some studies have shown that humans may adapt to cooler temperatures by increasing the amount or activity of brown fat, but we're a long ways from anything definitive.

The question isn't as simple as it may seem. Lean men seem to respond better than obese men to exposure to cold, at least in terms of brown fat activation. A map of the United States in another article showed obesity, in general terms, to be more prevalent in the Southeast, but many factors may contribute to that finding.

Harvard and MIT teams are attempting to find a way to produce more brown fat by activating a protein called PRDM16. Their initial work is near completion, but development of an actual marketable drug that works in this fashion is at least five to ten years away.

So in the meantime, should we all turn our thermostats down to say 65 degrees. I think that's a good idea; it would save fuel, decrease our emissions perhaps (thereby helping prevent global warming), and maybe, just maybe help us to lose a few pounds.

Weight-loss fundraiser

Friday, March 12th, 2010

Fascinating article and accompanying editorial in our local paper today. It seems that General Mills and other big businesses have pledged $0.14 to food banks across the country for every pound lost by their area residents. What a double win that could be: here the Food Bank for Larimer County has noted a huge increase in the number of visits by those in need of food help; up 32,000 from 2008 to 2009. Twenty percent of the kids in the county get food assistance either through the schools or food stamps.

At the same time, although Colorado is a "relatively lean" state, more than half of the people who live in my county fall into the overweight and obese categories (that includes one fourth of the students in our school district). We face a quandary in these difficult financial time; it's cheaper to buy unhealthy food choices than healthy ones.

So our Food Bank has over 13,000 area folk who've pledged 13,000 pounds so far and is aiming at 50,000 pounds in pledges. If they succeed, they'll get $7,000 from the corporate sponsors of the "pound for Pound Challenge," be able to feed more of our our-income residents and, at the same time, help those who pledge to become healthier.

It's hard to think of a better "twofer" than that. Wherever you live, I'd suggest seeing if your area food bank is participating. Join in on this wonderful plan to help others and yourself.

Here's more on another book I liked

Tuesday, December 22nd, 2009

David Kessler's new (2009) book is ttitled The end of overeating: Taking Control of the Insatiable American Appetite. Kessler knows his territory, both professionally (he's a former medical school dean and former FDA commissioner) and, from my read, personally. His premise is we've been, absolutely deliberately, conditioned to overeat. he's talking about Americans and the US food industry, but I think his comments are applicable widely, especially as the "American Diet" has made its way to many other countries. He discusses animal research which showed that sugar and fat, in combination, could override heredity. He also talks of how an executive of the food industry said they know and use the fact that combinations of  sugar, fat and salt make foods more pleasurable. They've spent large amounts on making prepared foods, especially quick foods more appealing to our senses.

The result, of course, has been expanding waistlines and increased average weight, significant contributors to a host of health problems. Kessler, in the latter part of his book, outlines a comprehensive approach to what he calls "Food Rehab." I think this is a book well worth reading and will give you a link to Dr. Kessler's website http://theendofovereating.com/