Body art is defined as tattoos, piercings (other than ear lobes), and hair dyes in unconventional colors. when it comes to tattoos, people 26 to 40 years old are times more likely to have tattoos than people who are 41 to 64 years old.

The answer is four times more likely.

This is a great generalization however people aged 26 to 40 years old are four times more likely to have body art because in modern times body art is more acceptable, it is a form of self expression, younger generations are more open minded to such things and like to express themselves through alternative means. Body art in general has only become more accepted in western societies in the last 30 - 40 years.

they all focused on themes about the inevitability of death.

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.