IS THERE SOME SORT OD AILMENT THAT WOULD CAUSE LOW VITAMIN D, B12 AND STOMACH PAIN AND DIARRHEA WHEN EATING DAIRY, EGG YOLKS, GREASE(NOT INCLUDING OLIVE OIL OR BUTTER), AND BEEF? MY PRIMARY DR MENTION SOMETHING ABOUT MALABSORPTION. I AM NOT LACTOSE INTOLERANT, I DO NOT HAVE CELIAC DISEASE, AND I M NOT ALLERGIC TO DAIRY.