Christina Applegate, who was diagnosed with breast cancer in 2008, overcame the disease by having a double mastectomy later the same year.

Christina Applegate
Christina Applegate 

After staying silent about the ordeal she went through, the actress finally opened up about how she's coping with life after the procedure as well as how she's helping other at-risk women.

"I lost my mind," said Applegate when asked how she reacted to her diagnosis. "I still sometimes lose my mind six years later. You look down and you have a daily reminder of everything that you've gone through."

The double mastectomy saved her life after her breast cancer was detected by an MRI. Today, Applegate's foundation Right Action for Women gives free MRIs for high-risk women.

"We're done with almost 500 now," said the 42-year-old about her foundation, "We've spent over half a million dollars on MRIs, which is really incredible."

However, the actress admits that the cost of those MRIs has taken its toll too.