My DLCO is at 53 on the pulmonary function test with moderate restriction. My father suffers from familial pulmonary fibrosis and he is the 3rd sibling in his family to be effected with the disease.CT is gold standard and has been ruled out with me. As percautionary I have been referred to the Itertistinal Lung Disease Unit in Toronto. All of my other blood tests I believe have been in normal range other than C-Dimer and T-Cells. I grew up in Sudbury Ontario. I have not tried Gabba. Caffeine causes instant diarrhea as with most foods especially wheat, dairy and fatty foods.