SOME PEOPLE WONDER WHAT CAUSES THIS. ONE OF THE CAUSES IS CYSTIC FIBROSIS OF THE PANCREASE. CF ATTACKS THE LUNGS AND OR THE PANCREASE. WE COULD NOT FIGURE IT OUT IN MY SON, WE FOUDN THAT HE HAD TWO MUTANT CYSTIC FIBROSIS GENES. MBULLICK57@HOTMAIL.COM