One of the things I’ve come across in my studies is the effects of moving from one climate to another. Specifically related to changes in barometric pressure and humidity.
Areas that have a steady, unchanging level of humidity seem to offer the best outcome. Think places like Las Vegas. Only a 10% change throughout the day. Places like North Carolina on the other hand can vary as much as 40% twice a day.
My thoughts on this are because of the continual expansion and contraction of the skin from dry to humid and back.
Always seems to be a pretty major health crisis following a move.
It would also seem to take about 3 generations for the negative effects to settle.