I think the variables are simply too numerous to account for. Therefore I would never say that Scientology causes health problems. However, I do not think it is a stretch to allege that it can exacerbate existing or potential health problems.
These circumstances pertain to services in the CofS, not services outside of the CofS. I could certainly agree with stressful conditions associated with getting
any Scientology services from the CofS being a contributory factor, small or large, to any physical affliction.
Upper OT Levels, involving considerable expense, and time measured in years, would mean prolonged and possibly continuous stress. So in that sense it is not too much a stretch to think of Scientology causing health problems, although it would be more accurate to specify how the CofS administers the tech than the tech itself.
What is being audited is a different matter. A thought just occurred to me--in Study Tech Hubbard talks of unpleasant physiological effects from studying a subject in the absence of mass. I have observed this, in myself and others.
I solo'd OT3 for roughly a hundred hours or so, but haven't spent thousands of hours chasing after insubstantial beings supposedly the cause of much if not all of my own personal troubles. Could there be some correlation here with the absence of mass phenomena?
Paul