Sales of gluten-free products grew 74% between 2004 and 2009, and are expected to increase 15% to 25% a year, according to Nielsen. The market for products made without gluten is growing as more people are diagnosed with celiac disease and as gluten-free foods gain a reputation for being healthful.
Scientists who reviewed 72 studies of food allergies found inconsistent information related to frequency, diagnosis and treatment. The authors say between 1% and 10% of the U.S. population suffers from food allergies, but they could not determine whether the prevalence is increasing.
A study found 25% to 30% of overweight and obese children have gastroesophageal reflux disease, much higher rates than other studies have shown. Data showed the rates were similar for boys and girls and did not vary between children who were overweight and those who were obese.
About two-thirds of obese patients with gastroesophageal reflux disease had their symptoms resolve after they shed pounds during a weight-loss program. U.S. researchers reported that significant improvement in GERD symptoms for women came after losing more than 5% of body weight while for men it was more than 10%.
A U.S. study found that overweight women have a 31% increased risk of pancreatic cancer, and obese women a 61% increased risk, compared with normal-weight women. The study also found that women with a large waist in relation to their hips are at a greater risk for the cancer.