I feel better at dry, high altitudes w no pollution... Unfortunately, I don't currently live in such a place, so I'm wondering what the mechanisms are for reducing all the inflammation at high altitudes. I understand why I'm sensitive to pollution; my body just can't process any toxins, regardless of other factors.. However, I would like to understand the autonomic mechanisms involved w adjusting to altitude and relative humidity. I don't know much about how the autonomic system works, and since i rarely have vertigo, etc., I've always overlooked the autonomic & cardiovascular system aspect of CFS for myself... Maybe I'm missing something.. High humidity also causes inflammation, and I always thought it was some intolerance to more mold in the air, but I"m starting to re-think that, too... Can anyone explain how the autonomic system lowers inflammation at high altitudes, or no humidity? Is it extra nitric oxide? one time I took extra arginine, felt amazing and super focused, then CRASHED hard.. but it was a good lesson b/c although I crashed, I felt like I learned something about the mechanisms of inflammation.. Maybe my problems are partly due to cardio problems??