Mice lacking the PKCγ gene did not adjust their circadian rhythms in response to meal time changes, while normal mice adjusted their "food clock" and woke up in accordance with new meal times, a study in the Proceedings of the National Academy of Sciences found. The findings may help scientists understand the molecular mechanisms of diabetes, obesity and other metabolic disorders, researchers said.
Research into nutrigenomics, a new science that studies how food and ingested nutrients affect genes, has resulted in ideas for foods and supplements that might meet a customer's genetically specific nutritional needs. Stores are expected to soon offer products that will help reduce inflammation and fight obesity based on an individual's genes.
The food industry is marketing Americans into obesity, according to a book by Marion Nestle, a nutrition and food studies professor at New York University. Nestle says food companies are pushing processed foods and increasing portion sizes in search of higher profits. Food industry experts disagree with her and say sedentary lifestyles are the prime cause for obesity in the U.S. The Grocery Manufacturers of America's Gene Grabowski says supermarkets offer a wide variety of foods to fit a healthy lifestyle.