Ben Roethlisberger says he's fought both porn and alcohol addictions in the past ... but credits his relationship with his religion for helping him cut the habits.
The Pittsburgh Steelers QB made the revelations at the "ManUp Pittsburgh" conference over the weekend ... giving a pump-up speech to people who are going through similar struggles.
"People don't realize all the time that us athletes, we're human," Roethlisberger said. "We sin like everyone else. I am no different. We make mistakes. We get addicted to things. We sin."
Big Ben continued, "And I think sometimes we get put on this pedestal where we can't make mistakes.