I am currently living in Bangkok, which is up there as one of the most polluted cities in the world (air pollution). Over the last 10 years I lived mostly in China where air pollution was a lot worse - even. Since CFS I have become increasingly aware of the pollution, exposure to pesticides etc. here for which controls are limited and some studies show exposure is very high - so am taking it very seriously. I have found some research looking at the topic of autism and pollutants - considering CFS to be an ASD (Autism Spectrum Disorder): http://www.ncbi.nlm.nih.gov/pubmed/23404082 (most relevant) It seems relevant - although the studies have nothing to do with CFS, or our situation. They look at pregnancy and early years of children - however with so many similarities between autism and CFS it's something I'm weighing in. Hertz Picciotto is the researcher who has been looking at this area for a while - many papers on it on her pubmed profile: http://www.ncbi.nlm.nih.gov/pubmed?term=Hertz-Picciotto I[Author]&cauthor=true&cauthor_uid=23404082 Is there some evidence on this? - Has someone found any solid research on the impact of the environment to recovery? - Do you have anecdotes of your own? - Do you know of opinions of some of the doctors working in the area? (E.g. yasko, rich van konyenburg etc.) I have read anecdotal stories from other CFS sufferers that they have done well in clean air environments when they moved away - and see symptoms return when they're back in their usual place. I've been considering healthy areas of Canada and Mexico as possible locations for me to heal more quickly. The question I'm looking at is: If I move from one extreme (a polluted city like Bangkok) to a clean extreme (non polluted country side with organics) could this make a measurable impact? Increase rate of recovery significantly? If I can find reasonable evidence I'm going to do it - maybe it will be a useful experiment to report back on.