panic attacks...mental or physical problem?

i have been suffering from panic attacks since august 04. i am being treated by a homeopath and he has found many toxins in my body, candida, parasites, mercury, and adrenal exhaustion. my panic attacks stopped for two months and then i got food poisioning and ever since then i got worse and they came back. I went to a new homeopath and he gave me a detox plan. However, he told me that my organs which are affected and the symptoms i feel are emotional stressers. Does this mean that panic attacks are due to emotional stress or overload of toxins? (physical problem). I am so confused. Does this mean that if i can't get the emotional stess cleared i will be having panic attacks for the rest of my life? I've read that other people with panic attacks were cleared up just through detox. Please help!@!