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Sharon Osbourne says she underwent a double mastectomy as a precaution to prevent possible breast cancer. 

The 60-year-old host of The Talk tells Hello! magazine that she decided to have the surgery after finding out she carries a gene that increases the risk of developing breast cancer.

VIDEO: Sharon Osbourne Vows to Lose Lbs. For 60th B-Day

"As soon as I found out I had the breast cancer gene, I thought: 'The odds are not in my favor,'" said Osbourne, who battled colon cancer about 10 years ago. "For me, it wasn't a big decision, it was a no-brainer. I didn't want to live the rest of my life with that shadow hanging over me.

Watch the video from Monday's episode of The Talk, in which Osbourne further discusses her decision to have a double mastectomy and to forgo any future plastic surgery.

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