Worth taking a look to see if it helps you or a friend...
http://uk.youtube.com/watch?v=MJ_4YkekV9A - Cancer and politics pt 1... Start of part 2 is extremely interesting with his comments!
http://uk.youtube.com/watch?v=eO0I2jWthko - A world without cancer pt 1.
Unfortunately in my Dad's case it was due to many years of Anti-acids (rennies) which destroyed his digestion system which caused many issues...
One of the highest forms of Vitamin B17 is in Apricot Kernals which are a natural product... Both me and my mum have been regularly eating these with no ill effect...
There are some superb interviews with Lorraine Day on Conscious Media NEtwork also...
http://www.consciousmedianetwork.com/members/lday.htm