Joachim Heinrich of the Institute of Epidemiology at the Heimholtz Centre in Munich, Germany, led the study of over 3,000 children whose health was monitored from birth until they reach the age of six.
Blood tests revealed that children who live with dogs had a lower risk of becoming sensitized to pollens and other inhaled allergens that can trigger asthma, allergic rhinitis and eczema.
The study, published in the European Respiratory Journal, stated: "Dog ownership in early childhood was associated with a significant lower rate of mixed pollen and inhalant sensitization but not with dog sensitization and allergic symptoms and diseases up to age six."
Heinrich said the study implied that early exposure to dogs stimulated the immune system, as opposed to children who were suddenly introduced to house mites and pollen.
He added that further research is required to understand why dogs proved such immunity or protection to children before making a sweeping recommendation for children to get a pet dog.
