Dr. Bill Hesselmar, chairman of the study, notes that washing in a sink is less effective than washing in a dishwasher. Does not allow removal of all bacteria. It helps increase microbial exposure and motivates the immune system to work better and more effectively.
Hesselmar analyzed the history of over 1,000 Swedish children 7-8 years old suffering from asthma, eczema and seasonal allergies. 12% of children surveyed ate meals from hand-washed dishes. It turned out that these children suffered from allergies twice as often. Specifics?
Among the children who lived in homes where hand washing was done, 23% had eczema and 1.7% had asthma. For comparison, among children whose homes used dishwashers, 38% had eczema and 7.3% had asthma. A lower risk of allergic diseases was also noted in children who ate pickled cucumbers and cabbage and local dishes at least once a month.
The results are not surprising. It is increasingly said that exposure to microbes can reduce the risk of allergic diseases.