SUNDAY, June 27 (HealthDay News) -- Seawater itself is the reason why mercury in saltwater fish poses more of a health threat to humans than freshwater fish, even though concentrations of the chemical are much higher in freshwater species, according to new research.

SATURDAY, June 26 (HealthDay News) -- Taking vitamin C and E supplements will not lower the risk of the blood pressure disorder known as preeclampsia in pregnant women with type 1 diabetes, a new study finds.

SUNDAY, June 27 (HealthDay News) -- Scientists have located 12 new genes that seem to be linked with a predisposition for type 2 diabetes, bringing the total number of genetic locations implicated in the condition to 38.

SUNDAY, June 27 (HealthDay News) -- School-based efforts at better nutrition, more exercise and improved education about healthy living can help kids who are most at risk for obesity keep the weight off, compared to children in schools without such programs, a new study suggests.

SUNDAY, June 27 (HealthDay News) -- New research suggests that artificial pancreas technology can help diabetics gain greater blood sugar control overnight, even when they have eaten a big meal or had wine for dinner.