Ron,
I nearly froze to death the first winter I was on low carb. I didn't
know about paleo at the time, and I am now mainly paleo low carb.
I believe that after decades of eating the standard American diet - full
of foods quickly turned to sugar - that my digestive system was lazy. It
was not accustomed to burning fat since simple carbohydrates were so much
easier to utilize. When I cut off its supply of these foods, it took
awhile to begin utilizing my fat stores and the fats I was consuming in a
more efficient manner.
My body has now adjusted, and I think I am just as warm as I was before.
I also weight train, so I think that I have added muscle.
Paula H.