With all due respect alikan it is not "pulling bananas out of a hat". If you read John's post again he said "extracted from where?".
Interesting article in to-days Daily Telegraph:
"Long trips can cause DVT - even in your car"
"Long-distance travel by air, coach, car or train can triple the risk of potentially fatal blood clots even in journeys of only four hours, a Government report said yesterday ........... "
Edit: This is the full article:
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So please remember, come January, I suggest you have a good slurp of Sirco before you set out on that long journey and also suggest you take a few bottles with you for consumption enroute. That way hopefully we should all benefit both financially and healthwise.