I really have no input here since I am so new to candle making.... However, I work in the medical field and I often have patients that have soy allergies. True allergies should be taken very serioously. Also, as a side note, if you ever are admitted into the hospital please do not tell them you have a 'allergy' when it is really just a dislike. It causes a whole chain of events that staff has to go through. LOL Also, on the humorous side... when reading your post when I got to the part about estrogen production and men, I got a visual of men with boobs sniffing candles.