I find that coffee affects me the way most other foods and drinks: sometimes I'm fine and sometimes I feel sick and have D. Can't really make heads or tails out of this DD. So I just take it day by day and if I'm feeling ok I'll have a cup of coffee and hope for the best. I really enjoy a cup of iced coffee in the warm weather. Sometimes I wish I could find a definite link between what I eat or drink and how it affects me. Then I would know what not to eat. I do however stay away from the definite no-no's like nuts, raw fruits and veges, seeds, etc. This DD is soooo frustrating!