I'm a frequesnt flyer and a fairly frequent passenger on long flights. So I'm pretty blase about things like deep vein thrombosis. Sure, when I think about it I'd rotate my feet and shrug my shoulders a bit, but that's about the extent that I went to.
Well, I paid the price for it. I got back about two weeks ago from a trip from China to Seattle, and after a week or so, my left calf started bothering me. Not what you call real pain, just some discomfort and a pressure sensation that nagged. After a few days of it, I called my health care provider, who told me to get in *right away* because if it were a blood clot, it could be life threatening. I did, and they were right. It was a blood clot, probably caused by inactivity on the flight. Luckily, there is treatment for it and no long term harm done. But this story could have had a much nastier ending.
So don't be dumb like I was. From now on, I will wear compression socks on flights longer than 8 hours, drink plenty of good fluids and minimize intake of not so good fluids like coffee and alcohol, and I'll try to remember to get up more often and do some in-seat exercises.
End of PSA...