Trips Outdoors, Type 1 diabetes Why am I always high (hyperglycemic) at high altitude? April 3, 2016April 3, 2018by Julie Hooper, MPH, RDLeave a Comment on Why am I always high (hyperglycemic) at high altitude? This week I set out to discover why I seem to be more insulin resistant when I'm at altitude. From Hyperventilation to Hemoconcentration, learn what happens to your body at high altitude. Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Share on Pinterest (Opens in new window) Pinterest Email a link to a friend (Opens in new window) Email Like Loading...