Dirty play is good for children

Children should be allowed to play with dirty by their parents - scientists say, after finding that living too clean can weaken the skin's ability to heal itself.

The US team, led by Professor Richard Gallo, has discovered that common (harmless) bacteria that live on our skin act to activate a reaction that helps prevent inflammation when we are injured. .

Research is done on mice and human cells found, which inhibit the immune system's overreaction to scratches and cuts . which make these places swell.

According to the authors, this finding provides an explanation for "sanitation theory" - whereby exposure to contaminants during childhood will provide the body with weapons against phenomena. allergy.

According to the BBC, many experts believe that excessive cleanliness is the culprit causing the explosion of allergies in developed countries today.

In the UK alone, the rate of allergies has tripled in the past decade. 1 in 3 people has an allergy.

A spokesman for the British Association of Allergy also said that there is growing evidence that exposure to bacteria is a good thing. However, she also said that more research is needed on this issue.