Studies have demonstrated symptoms of at least mild depression in up to a third of patients with smell dysfunction. Interestingly, the reverse is also true: patients with depression often have impaired olfactory function. As might be expected, depression also appears to influence how much people like or dislike smells, whereby unpleasant odours are perceived as more unpleasant, and pleasant odours as less pleasant (ie, an overall negative shift in ‘hedonic’ perception). These changes could be due to altered neuronal processing of odour signals, which has been demonstrated using olfactory electroencephalography, in patients with depression and in healthy participants who’d watched a sad movie .
So there you have it. Information about tattoos and some about piercings. Now, if teens and their parents sat down and had a mature convercation about how they'd like to express themselves and they both agree on one thing or another then parents wouldnt have alot to worry about. Also teens who get the body art done, are required to take after themselves. If they are grown up enough to get the tattoo or the piercing, they should be grown up enough to take the proper actions to make sure it heals properly. But no matter how you look at it, tattoos and body piercings have been around for thousands of years and we can only imagine that they wont be going anywhere anytime soon.