That's right, Alice, as they say what doesn't kill you makes you stronger.

One recent theory holds that a possible reason for the increase of ear infections, asthma and allergies in kids today is because they tend to be brought up in a more sterile environment than in the past.

Antibacterial soaps and other anti-microbial products are widespread and more children spend their days indoors in daycare, playgroups etc. whereas in the past they would be playing outdoors eating dirt and generally being exposed to way more microorganisms than today.

This exposure keeps the immune system more active and the library of antibodies better stocked to ward off potential pathogens.