It's scare mongering from the press and a few so called doctors and professors who want to make a name for themselves. I had seen one interview with some professor who was explaining why it is dangerous to fly long haul because of DVT and when the guy interviewing him asked why pilots don't seem to suffer from it he quickly decided to change the subject. A pilot will spend more time in the air in one year than a fare paying passenger will do in their whole life, yet we don't seem to suffer from it.
Sorry Ross, but I don't think you can conclusively state that suffering a DVT due to flying is scare mongering.
Pilots like yourself will I presume, have to have a thorough Medical examination on a regular basis.
Your passengers on the other hand, do not, and many people board an aircraft with underlying health problems that they are unaware of, or have even consulted their GP over.
Not until those underlying health problems become symptomatic do they seek medical advice.
Many medical conditions can contribute to the statistics of your chances of having a DVT, EG: Obesity, smokers, heart and blood disorder patients and taking the contraceptive pill, or hormone replacement therapy I cannot see too many pilots taking the latter.
Flying in a pressurised cabin at altitude causes dehydration, which by the way, is made worse by drinking alcohol (being a diuretic) and thus increases the symptoms again, you as a pilot will not be consuming alcohol or taking any drugs other than the ones prescribed by your physician, that are "acceptable" by the aviation authorities.
Anyone can suffer a DVT, even the fittest of people, it is just one of life's unanswered questions....like why do seemingly young fit people suffer a heart attack and drop down dead, or people who have never touched a cigarette in their lives die from lung cancer but conditions inside and outside the body contribute a major part to these statistics.
We have come a long way since the sixties in relation to medical science and the inventions of drugs, all drugs have a side effect and those side effects were not put to the test in a pressurised cabin, flying at altitude where the oxygen levels are reduced thus putting the heart, internal organs and the blood in a compromised position.
How many planes and passengers were in the skies in the 60`s, 70`s or even the 80`s compared with today.? and only now, may we be seeing the true statistics, statistics that many airlines do not want to publish...it`s bad for business.
Regards
SanJi x