Well, I can’t tell you no, because at the end you will go watch it anyway, I know.... I was you back then.

So that being said, I suggest you put that one on your “later” list.

Extreme stuff like cannibalism, very gory depictions of beheadings, dismemberments, extreme porn up to and including bestiality (yes there is severe stuff out there), that stuff warps your mind as well as desensitizes you and changes your outlook on people.

Being exposed to this so early in life can have negative effects on you in the long term.

Other stuff that will change your perspective of people that you should avoid watching is animal slaughters (videos of meat plants for processing chicken, cattle etc), suicides and homicides (liveleak is cancer, stay out of it), and unless you intend on becoming a doctor and surgeon, stay away from videos of pathology and cadaver mutilation etc (the medical videos out there).

This stuff is extreme and will affect you regardless of age, but might be worse if you get exposed to it too young.