Reality Tv star Kelly Osbourne has learned to appreciate her health after suffering a terrifying seizure last month (Mar13), insisting the 60-second medical scare changed her life forever.

The daughter of Ozzy and Sharon Osbourne was hospitalised in Los Angeles after she collapsed on the set of her U.S. Tv show Fashion Police.

Now Osbourne has opened up about the incident, admitting the health scare has made her feel grateful for her body and spurred her on to achieve her fitness goals, following her 70-pound (32-kilogram) weight loss since 2009.

She tells Self magazine, "I never want to take my good health for granted. The seizure was 60 seconds, but those 60 seconds will change my life for the better forever. I've worked hard to get in shape, and I'm going to continue. Not because being skinny is important, but because I want to feel good."

The 28 year old, who posed in a bikini for the publication's cover, now feels more "secure and content" than ever before.

She adds, "I don't compare myself to anybody else. It's Ok to have a healthy envy and look up to somebody and set goals, but you have to realise that you're never going to be exactly that person. Wishing you were Angelina Jolie or J.Lo (Jennifer Lopez) isn't going to change the fact that you're not. Why not start working with what you do have instead of what you don't?"