Dr Dan Baumgardt, a neuroscientist and physiologist at the University of Bristol in the UK, wrote for The Conversation that the belly button - known medically as the navel - 'has more depth to it ...

Starting in 2005, Steinhauser – then a chemist at the Vienna University of Technology – collected pieces of belly-button fluff from his navel and recorded their colour and weight. Over the ...

But no one knew the answer. So for three years he collected his own belly-button lint to find out. And after interviewing friends and analyzing 503 of his own samples, Steinhauser discovered the ...

An infected belly button piercing causes swelling, pus, fever, chills, and even an upset stomach. If the belly button piercing is infected keep it in and clean the area with antibacterial soap.