Allergy seasons in the US now start earlier, last longer and cause stronger symptoms. Warmer temperatures, rising CO2 and pollution increase pollen, and more adults and children are developing new or worse allergies this spring.
Photo by Salah Darwish, Unsplash
Many children outgrow milk and egg allergies, while peanut, tree nut, sesame and shellfish allergies often persist. Factors such as IgE levels, allergy severity and genetics affect whether a child becomes tolerant and which treatments help.
Researchers compared infants from Old Order Mennonite farm families and urban families in New York. Farm-exposed babies showed earlier immune maturation and higher antibodies, and breast milk antibody patterns were linked to lower egg allergy risk.
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