What is the recommended strategy for reintroducing a diet after remission on FRD?

• A. Reintroduce the previous diet gradually to test for recurrence; if signs return, FRD was the driver; if not, the diet may be tolerated
• B. Reintroduce the previous diet gradually to test for recurrence; if signs return, FRD was not the driver; if not, the diet may be tolerated
• C. Reintroduce the previous diet all at once
• D. Avoid foods for a prolonged period

Answer: (A)

When rechecking response after remission on an elimination diet, you reintroduce the previous diet in small, gradual steps rather than all at once. Begin with a small amount of the prior diet and slowly increase the proportion over several days while watching for signs such as vomiting, diarrhea, appetite changes, or weight loss. If these signs recur, it indicates the prior diet was driving the disease; you should maintain or return to the elimination diet. If no signs appear, the prior diet may be tolerated and can be reintroduced more fully.

Reintroducing everything at once can cause a relapse without clarifying what level of exposure is tolerable, and prolonged avoidance doesn’t help determine whether the diet can be reintroduced.