I hope i'm not boring you with this personal story:
My mother had cancer when i was 15 years old. She was (understandably) afraid of both radiation and chemotherapy, so she had the tumour surgically removed, and then used homeopathic and other "natural" medicines to get rid of the rest. Every day for several years she injected a shot of a natural mistletoe extract called "Iscador".
Then, of course, the cancer came back and nearly killed her. The second time she did go through the radiation therapy. She is now healthy -- as far as the doctors can tell -- but permanently disabled. She still takes the homeopathic stuff and believes in it wholeheartedly.
Maybe this was a contributing factor to me becoming skeptical of these things.
On the other hand, i've been passively skeptical ever since childhood, when mommy bought me a nasty alcohol-based homeopathic drug to cure my sporadic fits of headache. Alcohol makes headache much worse. But aspirin, see, is very dangerous, and homeopathic drugs have NO SIDE EFFECTS!