I have both ears pierced and tattoos on my body are these against islam for a man? i had them 10 years ago whilst being muslim.
I dont see how wearing studs in ears is harmful to men.
Men are not allowed to wear earring because they are an imitation of women. Women wore earrings in the times of our Prophet (PBUH) and he never dissuaded them, though he did say men shouldn't imitate women and vice versa.
As for tattoos...well, they are haram for both men and women.
Hope that helps
You may find this link helpful. I don't know if you can trust anything you read online completely, but it's worth reading to get a gist of it