The reason that soy is harmful to cancer is because soy feeds estrogen based cancers. Soy is good for other things. You put chemicals into the wax to make it stronger, smell better and look better. Why not the concern for those chemicals. You are more likely to get damage from burning chemicals than soy wax. Now, if you really want to break it down then the reason that colon cancer has increased is from radiation from microwaves. Think about it, a microwave is at stomach level concentrating radiation there..... Anyways, soy does not cause cancer. It only feeds estrogen based cancer. If a consumer is worried about feeding their estrogen based cancer through their soy candle then they should probably get another kind. And if I have any say, I think that they should get rid of their microwave:D .