Children sitting in the dirt, healthier

Leaving your children unclean things, which can be healthier, scientists say.

Children who are exposed to dirty things in the first year of their lives were found to have significantly less likely to have allergies or asthma.

Previous studies have shown that children who grow up on farms have fewerallergies and asthma rates, a phenomenon attributed to their regular exposure tomicro-organisms in the soil of the farm.

Other studies, however, have found an increased risk of asthma among residents of the city exposed to high levels of cockroaches and mouse allergens andpollutants.