Chris, Cardiff asked:
Are we washing off our skin bacteria using antibacterial soap? Can we put them back perhaps with some sort of lime yoghurt?
We put this question to Marcello Riggio:
Marcello - Yeah! Itís very important to have good hand hygiene but most of the bacteria on the surface of the skin are fairly harmless unless they get into the bloodstream where they can cause nasty infections. The most well-known is MRSA, methicillin-resistant Staphylococcus aureus. We donít need to worry about bacteria on the skin. They donít cause any harm so long as they stay on the surface of the skin. Skin is a very good barrier and they donít get into the bloodstream.
Chris - If you strip away the good ones is there not a danger the bad ones might take over?
Marcello - There certainly is, actually but if youíve got bad bacteria on the skin then as long as they donít get into the bloodstream theyíre not going to cause any major problems.