(If not, then simply answer No. The question is illegal, and the interviewer is asking for your opinion. The only time you should answer this question positively is if you do have a condition that will become evident in a preemployment physical, like diabetes. In that case, you might answer:)
Nothing that would interfere with my work performance. I have had diabetes for ____ years, but I control it very successfully and unobtrusively. It has never become an issue in my work; and, aside from my family, only my doctor knows. It isn't a secrete - it just has nothing to do with performing on the job.
chronic adj.慢性的, 延續很長的
preemployment physical 錄用前的.體格檢查
diabetes n.[醫] 糖尿病, 多尿症
interfere vi.干涉, 妨礙
unobtrusive adj.不顯眼的