Do you like tattoos? It is a form of body modification using ink to create a permanent design.
I have seen tattoos, but i think they are unattractive.  Where did this practice originate?
Aparently It has been practiced since at least Neolithic times as there have been mummified bodies found with tattoos from that period.
i would have thought Africa, but you are most likely correct.  Isn't tattooing oneself an unsanitary practice?  Can you catch diseases from a tattoo?
Not anymore.  Modern tattoos nearly always require the use of a tattoo machine and procedures and accessories to reduce any risk to human health.