Well , I just had to comment here. Vegetables are the most alkaline food there is. It is not acidic. You will find alot of info on this on the internet. What is acid and what is not.
It could however be that you
have an immunological response ( intolerance ) to foods or chemicals. I just took the Alcat test , ( google it) , and it sais I should not have apples ( among other things) I have Arthritis too , and was even on a juice fast ( with apples) soo.
Dont give up:-))