I've heard anecdotes time and time again from people with allergies that their parent ate a lot of the food they're allergic too while pregnant. Is there any known correlation?
Alright, let's jazz up this question with some sources:
Can Pregnant Moms Give Their Babies a Peanut Allergy? Maybe
According to a new study led by Dr. Scott Sicherer at Mount Sinai School of Medicine, that's a strong possibility. Sicherer found that among 503 infants who showed signs of milk and egg allergies aged three to 15 months, those whose mothers ate peanuts more than twice a week while they were pregnant had higher levels of antibodies to peanuts than those whose mothers ate peanuts less often... Sicherer points out that higher levels of the antibody do not necessarily mean that the babies will definitely become allergic to peanuts, but that it's a strong sign that they might be at greater risk of developing the food allergy. [Ref]
Funny enough, another article had its own twist on this exact same study that made it sound like a sure thing:
Eating Peanuts During Pregnancy Linked to Peanut Allergies
This new research study suggests that eating peanuts during pregnancy increases your baby’s risk of developing peanut allergies later in life. In fact, the more peanuts that a pregnant woman eats in her third trimester, the higher her baby’s risk of being sensitive and possibly allergic to peanuts. To conduct the study, researchers looked at 503 infants, between the ages of 3 and 15 months... [Ref]
Funny enough, almost every article finishes with "But the research is mixed, so don't let this news affect your diet while pregnant." Why the mixed signals?