Pop star Anastacia was struck down with depression following her double mastectomy.

The I'm Outta Love singer underwent the drastic procedure last year (13) after learning she had been diagnosed with breast cancer for a second time.

Anastacia now admits she suffered nasty side effects from the pain medication she was given in the aftermath of the operation, including depression.

She tells Britain's Hello! magazine, "(I suffered depression) but only because of the painkillers. I didn't want to take them (the painkillers) - I'm not someone who likes to do drugs of any kind - but I had to and they weigh heavy on you after a while.

"It was the kind of pain that can drive you crazy, you know. I hadn't been prepared for that."