Knowledge | Can You Eat Peanuts During Pregnancy? New Research Challenges Traditional Restrictions
People have long been cautious about diet during pregnancy, especially foods associated with childhood allergies. Peanuts, milk, eggs, and fish were once considered “high-risk foods,” leaving many expectant mothers worried that one wrong bite might affect their child’s immune system. Recent research and expert opinion suggest this approach may need reconsideration.
Dr. Frank R. Greer, professor of pediatrics at the University of Wisconsin, noted that in 2000 the American Academy of Pediatrics (AAP) recommended that pregnant women with a predisposition to allergies avoid peanuts and tree nuts to reduce their child’s future risk of food allergy. The advice was later extended to breastfeeding and expanded to common allergens such as milk, eggs, and fish.
However, growing medical evidence now questions this avoidance strategy. “The recommendation was initially based on inference, but it proved ineffective,” Dr. Greer said.
Multiple published studies have found that avoiding food allergens such as milk, eggs, and peanuts during pregnancy does not significantly reduce an infant’s allergy risk. Some research instead suggests that children of women without allergies who ate peanuts or tree nuts more than five times a week during pregnancy were less likely to develop nut allergies.
This counterintuitive finding has led to a new theory: early exposure may help build immune tolerance. In other words, appropriate exposure to some potential allergens during fetal development or early infancy may help the immune system adapt and reduce future allergy risk.
If a pregnant patient or an immediate family member such as a parent or sibling has a confirmed allergy history, the child is considered high risk. Whether to eat peanuts or similar foods should then be decided carefully with guidance from an obstetrician or allergy specialist.
Researchers are also studying other factors that may affect infant allergy risk. Some studies suggest that probiotics, such as the “good bacteria” in yogurt, during late pregnancy and breastfeeding may help reduce infant allergies. Evidence is not yet sufficient to recommend probiotics for every pregnant patient, but moderate use with a doctor’s approval has no clear known risk.
Dr. Nivin C.S. Todd, a WebMD medical adviser and OB/GYN, shared her experience: “I ate a balanced diet during pregnancy, including milk, eggs, and nuts. None of my children currently has allergies. However, my family has no significant history of allergy, which may be a factor.”
This suggests that pregnancy dietary restriction lists should be updated using a more scientific and individualized approach. Unnecessary restrictions may be ineffective, limit beneficial nutrients, and create avoidable anxiety.
Knowledge | Can You Eat Peanuts During Pregnancy? New Research Challenges Traditional Restrictions
Knowledge | Can You Eat Peanuts During Pregnancy? New Research Challenges Traditional Restrictions
People have long been cautious about diet during pregnancy, especially foods associated with childhood allergies. Peanuts, milk, eggs, and fish were once considered “high-risk foods,” leaving many expectant mothers worried that one wrong bite might affect their child’s immune system. Recent research and expert opinion suggest this approach may need reconsideration.
Dr. Frank R. Greer, professor of pediatrics at the University of Wisconsin, noted that in 2000 the American Academy of Pediatrics (AAP) recommended that pregnant women with a predisposition to allergies avoid peanuts and tree nuts to reduce their child’s future risk of food allergy. The advice was later extended to breastfeeding and expanded to common allergens such as milk, eggs, and fish.
However, growing medical evidence now questions this avoidance strategy. “The recommendation was initially based on inference, but it proved ineffective,” Dr. Greer said.
Multiple published studies have found that avoiding food allergens such as milk, eggs, and peanuts during pregnancy does not significantly reduce an infant’s allergy risk. Some research instead suggests that children of women without allergies who ate peanuts or tree nuts more than five times a week during pregnancy were less likely to develop nut allergies.
This counterintuitive finding has led to a new theory: early exposure may help build immune tolerance. In other words, appropriate exposure to some potential allergens during fetal development or early infancy may help the immune system adapt and reduce future allergy risk.
If a pregnant patient or an immediate family member such as a parent or sibling has a confirmed allergy history, the child is considered high risk. Whether to eat peanuts or similar foods should then be decided carefully with guidance from an obstetrician or allergy specialist.
Researchers are also studying other factors that may affect infant allergy risk. Some studies suggest that probiotics, such as the “good bacteria” in yogurt, during late pregnancy and breastfeeding may help reduce infant allergies. Evidence is not yet sufficient to recommend probiotics for every pregnant patient, but moderate use with a doctor’s approval has no clear known risk.
Dr. Nivin C.S. Todd, a WebMD medical adviser and OB/GYN, shared her experience: “I ate a balanced diet during pregnancy, including milk, eggs, and nuts. None of my children currently has allergies. However, my family has no significant history of allergy, which may be a factor.”
This suggests that pregnancy dietary restriction lists should be updated using a more scientific and individualized approach. Unnecessary restrictions may be ineffective, limit beneficial nutrients, and create avoidable anxiety.
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