Do you have any food or environmental allergies? Parents who have or have had allergies may pass them – though not necessarily the specific allergies – to their unborn child. Some research indicates that allergic mothers (or mothers who have had allergies in the past) and who eat highly allergenic foods (such as peanuts and dairy products) while they’re pregnant may be more likely to pass their allergies to foods on to offspring.  If you’ve ever suffered from allergies, talk to your doctor and an allergist about whether you should restrict your diet during pregnancy.