Blogger Ron Rapp discusses the future of business jet development. A Gulfstream G650 recently set records for flying around the world with only a single fuel stop, but Rapp says that speed and comfort are likely to take precedence over range in new aircraft design. "Once the sound barrier is broken, the race will really be on," he writes.
Researchers at Arizona State University found that some 500 to 1,000 distinct bacterial species play roles in maintaining a healthy weight. Treatments that modify the gut microbiome may help address obesity and other health concerns, researchers said.
An Australian study in the American Journal of Gastroenterology found using submucosal injections of succinylated gelatin rather than saline improved endoscopic resection of large sessile colon polyps. The inexpensive plasma volume expander led to fewer injections and a 50% reduction in procedure time. Read the abstract.
A multicentered study found the chances that a child will need bowel surgery for inflammatory bowel disease by five years after the diagnosis was first made were nearly two times lower than previously reported rates of 47%. The data, however, showed an increased risk of surgery for children who were diagnosed with Crohn's disease between ages 13 and 16.
Teenagers who got less than eight hours of sleep per night ate 2.2% more calories from fat and had more snacks and total calories than those who got more sleep, study data showed. Researchers said these teens may have metabolic disturbances linked to obesity and insulin resistance similar to shift workers with irregular sleep.