The 80-year-old actor was diagnosed with the disease last year (11), but he recently declared he is in remission.
Now he has opened up about his health battle, calling cannabis "a medicine" and praising the drug as "much better than alcohol or tobacco and (it) hasn't killed anyone".
He is quoted as telling Germany's Bunte magazine, "The cancer and the chemotherapy really took it out of me. I lost 30 pounds, weighed only 171 pounds. Marijuana actually brought my appetite back."