The Real Bears

Ever wonder what happened to those polar bears on the Coca Cola commercials? This version comes from The Center for Science in the Public Interest (CSPI). It's very cute.

Food and Bugs - Two Different TED Talks

There are two different TED talks here that I found very interesting. Both talks are fascinating and easy to understand. TED talks have a short format, under 18 minutes I believe.

The first one is from Stephan Guyenet on "The American Diet: a Historical Perspective". He discusses the different composition of diet today versus about a hundred years ago. There has been enough of a change to raise a few eyebrows. Stephan also has a blog Whole Health Source.


The second TED talk is from Bonnie Bassler on "How Bacteria Talk" (just scroll down to the little TED screen). Ms. Bessler is a microbial geneticist at Princeton University.  In the late 1990's she was studying the glowing bacteria in angler fish (if you've seen Finding Nemo, this is the monster fish with the "pretty light"). She tried to figure out how they all knew to glow at the same time. Up till then, for the most part, bacteria were not considered intelligent enough to communicate with each other. She discovered that not only do they communicate, they are multi-lingual. The have an intra-species language and a sort of universal language that most bacteria seem to understand.

Wheat Lectins, Soybean Lectins, and the GI Tract

Here is an interesting piece of research highlighted by David of Healthy Diets and Science. (David's site is fun to browse around in). The study is titled "Lectin-Based Food Poisoning: A New Mechanism of Protein Toxicity". In this study the researchers find the plant lectins wheat germ agglutinin (WGA) and soybean agglutinin (SGA) can not only inhibit repair of gi cells when damaged, they also can block mucus production that the body uses to lubricate damaged areas. Some interesting highlights:

"Areas of epithelial cell necrosis and even zones of complete epithelial cell denudation are seen in biopsies of the stomach and intestine of mammals and insects fed plant lectins. Indeed, the plant lectin may function as a natural insecticide. Epithelial cell microvilli particularly are affected by lectin exposure..."

"Epithelial cells lining the GI tract in vivo, unlike cells in vitro, are constantly exposed to mechanical stress and, consequently, frequently suffer plasma membrane disruptions. However, cell death is not the only outcome of this type of injury: cells are capable of rapidly repairing and thereby surviving plasma membrane disruptions. One key step of the repair mechanism, reviewed in, is exocytotic. For large disruptions, this exocytotic reaction functions by adding a ‘patch’ of intracellular membrane to plasma membrane surrounding the disruption site."

"Exocytosis, which is required for membrane repair, is likely targeted by this class of toxin: previous studies showed that lectins can inhibit exocytosis, and we show here that, in particular, mucin exocytosis, which is coupled to repair in the cells we have studied, is potently inhibited by lectins. Moreover, we have found (data not shown) that inhibition of repair is rapid in onset (<1 min after addition to cell medium) and rapidly reversed by lectin washoff ."

"Because lectins, based on the damage they do to the lining of the GI tract, and their hypertrophic effect, have been implicated in, respectively, celiac disease and cancer, knowledge of this mechanism may have implications beyond a better understanding of food poisoning."

This post is linked to Grain-Free Tuesdays and Fight Back Fridays.

Is Sugar Toxic? - Great Gary Taubes Article

I'm a big Gary Taubes fan. I devoured every word of "Good Calories, Bad Calories" and savored every morsel of "Why We Get Fat, and What to do About It". It's not that I was interested in losing weight, it's just that I was beginning to come to these conclusions myself. Then Taubes spells out the entire history of how mainstream dietary advice wound up where it is today. This current article is in the New York Times and is titled "Is Sugar Toxic?" Alex of Feed Me Like You Mean It had the link posted. Thanks Alex!

Can a Grain-Free Diet Reverse Tooth Decay?

Here's an interesting post from Stephen Guyenet of Whole Health Source called Dr. Mellanby's Tooth Decay Reversal Diet. He discusses a study published in 1924 called "Remarks on the Influence of a Cereal-free Diet Rich in Vitamin D and Calcium on Dental Caries in Children". Three different diets were studied for their effect on dental caries. The grain-free diet supplemented with vitamin D not only slowed the rate of dental caries, but actually reversed some decay.

What's the Fat on Breakfast?

For some reason I have to start my day with a high fat breakfast. If I don't then I can't make it to lunch and I just don't feel right. I could eat a plate of veggies for dinner and be fine, but for some reason I need that fat in the mornings like some folks need coffee. So I found this article very interesting:

Bacon or Bagels? Higher Fat at Breakfast May Be Healthier Than You Think