The 49-year-old claimed that her youthful looks are down to exercise and a healthy diet, reports Hindustan Times.
Sridevi said: "I want to tell these people that instead of whining and criticising, why don't you move out of your comfort zone, zip your mouth and slog it out? Then let's talk.
"There will be a visible change not just in your appearance, but also in your attitude. But if you're a lazy bum, hooked to TV, and cannot give up your food because you know you can undergo cosmetic surgery, you're damned. It doesn't work like that. Anything that is plastic melts in no time."
The actress returns to Indian cinema after a break of over a decade, with new release English Vinglish.
She also revealed that she would be interested in experimenting more with her choice of films.
"Nobody has offered me a bold role as yet, but I don't mind experimenting as long as I am comfortable. I am looking for versatility," she said.
English Vinglish is scheduled for release on October 5.
Watch fan tribute My English Vinglish Thoda Weak below: