Paul, I dont remember the last time I was at a high altitutde if ever so
I cant assist in this quesion.  i HOPE someone knows the answer cause
that is a place I might want to move. lol

Loretta

Howdy Paul,

I live in Seattle (sea level) and have been to Colorado Springs a few
times with one of my clients (during the summer and the winter
months), spending anywhere from a week to two weeks there.  Can't say
that I personally noticed much if any change in my BG readings,
fasting or otherwise. My BG levels pretty much range from 80s and mid
90's for fasting most mornings, with the odd dip into the 70's and
60's some mornings.

A few things that may be a factor in your lower numbers (other than
being at sea level), is your diet and times that you eat, your sleep
patterns, the outside temperature and lastly your activity levels
during the short stay at sea level.

I will tend to notice changes in my bg readings if I'm not very active
in another location and eat more things that I don't tend to eat
normally. When in Colorado Springs I'm less likely to take long walks.
compared to when I'm here in Seattle, and my attempts at workouts in
gyms, has always been short when at the higher altitude there as well.
BlkBear Type 2

Interesting, I'll check it out next time I go to the mountains.  I
have noticed that when I go to the Sierras, say above 8,000 feet, my
mitral valve starts fluttering like a flag in high wind.