I have been living at sea level for a long time. 10+ years in Chicago. I am visiting the Lake Tahoe area right now and moving here later next year. I am very surprised at how much altitiude has affected my blood sugar and insulin usage. Right now I am at 6700 feet. I will be living at 6000 in the future. I have been seeing wide swings in blood sugar levels and I realize now that blood sugar meter and my medtronic sensor are not as accurate as advertised at altitude. Do any of you have any advice for adjusting to altitude?