According to a Finnish study of 6,000 children, there was a significant association between high birth weight (bigger than 4,5 kg) and atopy and asthma.
The biological mechanisms behind the associations are unknown, but they could be related to obesity.
High birth weight, asthma and atopy at the age of 16 yr. T. Remes et al. Pediatric Allergy and Immunology (OnlineEarly Articles). doi:10.1111/j.1399-3038.2007.00707.x
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