It could be because most newly occurring mutations (known as de novo mutations) come via the father and there are also links between the fathers age and a number of complex diseases, said researchers in the paper published in the journal PLOS ONE
But I would prefer more dimension
Klesges, R
In the unbalanced urban-rural divide of Japan, the emerging tobacco market is primarily concentrated in two densely populated city clusters: the Tokyo-Yokohama metropolitan area, commonly referred to as the Greater Tokyo area, and the Kansai metropolitan area encompassing Kyoto, Osaka, and Kobe, commonly known as the Keihanshin region
I dont care if its 100% harmless (which I have a hard time believing anyway), its totally rude
And, like traditional combustible cigarettes, when vapes malfunction, they can cause burns or may even become a fire hazard