This study found that pregnant women who ate more nuts, vegetables, fruits, and protein had children with significantly lower rates of allergies. The research compared the diets of mothers whose children developed allergies to mothers of allergy-free children and discovered that higher consumption of omega-3 fatty acids and folic acid during pregnancy was linked to healthier immune development. The findings suggest that eating a nutrient-rich diet during pregnancy may help protect babies from developing allergies and other immune-related conditions.