I know this is all wierd, but when I was younger (I m now a teenager), I used to love sweet and sugary things like cake and cookies. Now, whenever I even look at chocolate chip cookies or brownies or anything like that, I get a sick feeling. There s nothing in the past that I can remember that could have triggered this reaction. It s not that I don t like the taste either. I m not sure if this has anything to do with this, but over the years I ve developed this dairy allergy also. I haven t went to the doctor for this, I just try to stay away from things like Mac n cheese and milk. My only symptom is nausea. I also used to eat mashed potatoes just fine, now I can barely eat it without nausea either. Same with some other foods Is there a common ingredient or something in these foods that I can t consume?