I have had depression since a late teen, which got worse with each of my pregnancies, to the point where after my youngest was born I was told by a leading post-natal depression psychiatrist that my depression was incurable and medication resistant. He said I would require weekly ECT (shock-therapy) treatments in order to lead a normal life. I said no and didn’t see him again after that. Another doctor prescribed an anti-depressant that I hadn’t tried, which kept me alive. The milk allergy manifests in me as depression, mild to moderate oedema and headaches - not your usual allergy symptoms, which is why it wasn’t diagnosed earlier. Without milk in my diet I suffer no depressive symptoms whatsoever and do not require any medication (and the associated side-effects). If not for your book, I would still be popping happy pills morning and night. – by email, Qld