A team of researchers, led by Canadians, have identified five significant risk factors that can increase the likelihood of children developing food allergies early in life. They conducted a meta-analysis involving 2.8 million participants across 40 countries, making it one of the most extensive reviews of its kind. The risk factors include infant eczema, a family history of food allergies, delayed introduction of foods like peanuts or fish after 12 months, parental migration, and allergic dermatitis.
Food allergies are on the rise globally and can lead to severe anaphylactic reactions. Despite the increasing prevalence, predicting who will develop these allergies remains challenging. The study’s authors believe that understanding these risk factors could pave the way for new prevention strategies.
Dr. Derek Chu, the study’s senior author and an assistant professor at McMaster University, emphasized that food allergies are not solely caused by one factor but rather a combination of influences. The review highlighted the importance of early introduction of common allergens like peanuts to infants around six months of age, as recommended in Canada and the U.S.
The researchers also found that early onset of eczema is a major risk factor for developing food allergies. Addressing eczema promptly in children with a genetic predisposition may help reduce the risk. The study emphasized the significance of proper skin care in infants and children to mitigate the development of allergies.
Additionally, the use of antibiotics during the first month of life was identified as a significant risk factor, potentially affecting the body’s microbiome and contributing to the development of food allergies. However, the researchers noted the essential role of antibiotics in treating severe infections in infants.
While the study provided valuable insights into mitigating food allergies, the researchers stressed the need for further robust randomized trials to establish concrete cause-and-effect relationships. They acknowledged the challenges posed by the diversity of studies conducted in different countries.
As highlighted by a personal account shared in a CBC story, individuals with food allergies, like Lucille Friesen, underscore the importance of advancements in allergy research to improve the quality of life for those affected. Friesen’s experience with severe allergies and eczema emphasizes the significance of early intervention and adherence to current guidelines for introducing allergenic foods to infants.
