Wednesday, May 27, 2009

New Prebiotic Fibers Study Out

Prebiotic oligofructose was the subject of a recent study completed in Canada, and the results may be fantastic for those watching their waistlines.
Overweight and obese adults receiving supplements of oligofructose lost an average of one kilogram over 12 weeks, compared to a general increase in weight in the placebo group of almost half a kilo, according to results of a randomised, double-blind, placebo-controlled trial published in the American Journal of Clinical Nutrition.
Jill Parnell and Raylene Reimer from the University of Calgary report that the prebiotic fibres were associated with lower levels of the hunger hormone ghrelin, and higher levels of a hormone in the gut, peptide YY (PYY), linked to increased feelings of fullness (satiety). [link]
You might recall our mention of how hormones work in the digestive system in our Feature Article entitled, "You are What You Eat? Well, Maybe..."

Here is a quick excerpt regarding the two hormones -- Ghrelin, and Peptide YY

Additional hormones in the digestive system regulate appetite:

  • Ghrelin is produced in the stomach and upper intestine in the absence of food in the digestive system and stimulates appetite.

  • Peptide YY is produced in the digestive tract in response to a meal in the system and inhibits appetite.

Both of these hormones work on the brain to help regulate the intake of food for energy. Researchers are studying other hormones that may play a part in inhibiting appetite, including glucagon-like peptide-1 (GPL-1), oxyntomodulin (+ ), and pancreatic polypeptide.