The Krrissh actor is known for his physical fitness routine.
Roshan told DNA India: "All of us tend to take our health for granted, but you know, no one is invincible, not even heroes... we need to take care of our bodies... which are often taken for granted.
"Today I have completely gotten over my back problem, but the scare was enough to bring about a lot of changes in my lifestyle. The back trouble had set off the alarm bells for me!"
Roshan added: "I think that when you consciously just make up your mind to do or not do something, you find the willpower to stick to it too."
The action star famously gave out copies of Allen Carr's Easy Way to Stop Smoking to his celebrity friends including Salman Khan and Shah Rukh Khan.
Shah Rukh Khan was recently criticised by public health officials for smoking publicly and setting a bad example to his fans.