glucose

"We'll be digging into that in future studies, and looking at possible connections with eating patterns and changes in glucose tolerance," Dr. Kleinberg says.

Lifestyle changes, including controlling obesity, smoking cessation, being physically active, controlling high blood pressure and controlling blood glucose levels can help prevent the development of heart failure.

Rescuers have been sending supplies of water, glucose and oxygen to those trapped through small gaps in the debris.

One concern is refeeding syndrome, a condition where sudden availability of glucose can cause rapid changes in electrolytes.

This lowers blood glucose levels and can make insulin work more effectively.