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…showed last 75 words of 400 total…of course they are going to get sick. It does not take a genius to figure that out. Why are people so intent on saying that morning sickness is caused by certain foods? They cannot just leave it at the immune system being weakened by the development of the fetus. In my opinion I think that the simplest explanation is the best one. Why complicate things? Let us just leave it at the biological explanation.