Scientists from York Nutritional Laboratories (YNL) have backed claims made by a Government Advisory Committee report that there is a strong link between the microorganisms present in milk and bowel conditions such as Crohn's Disease. The laboratories' CEO, John Graham, maintains that food industry giants are ignoring the value of food intolerance testing, something YNL has been involved with for 18 years, and thus are failing to appreciate that different people react in various ways to different foods.