Hi Stefan, 
Sorry to hear about your cancer. 
As I'm very interested in health and natural healing, I thought I would pass on some info about cancer which you may not have come across. This is a link to a youtube vid titled "How Vitamin D Reduces Incidence of Cancer: DINOMIT Model": 
 
 . If that peaks your interest, here is a more in-depth presentation: 
 . There are a lot more links I can give you if you want. Dr. Garland is one of the leading epidemiologists on vitamin D and cancer.Let me know. 
Sincerely, 
Russ