And since then I have definitely changed my lifestyle and my health goals." Walsh said she has since changed her health and her lifestyle, relying heavily on protein shakes."Protein shakes became, post-brain surgery, a huge, huge part of my diet, making sure that I get enough protein," she said.

Also see: 'Grey's Anatomy' cast: Where are they now?

"Grey's Anatomy" cast, (L-R top row) Ellen Pompeo, Kate Walsh, Chandra Wilson, Sandra Oh, Katherine Hiegl, Sara Ramirez, T. Knight, (L-R bottom row), Justin Chambers, Patrick Dempsey, James Pickens, Jr.

The professional roles and real lives of a diverse group of surgeons collide unexpectedly in this Golden Globe-winning ABC television drama.

As a third-year resident at Seattle Grace Hospital, Meredith Grey (Ellen Pompeo) tries hard to live up to the reputation of her legendary surgeon mother while hiding the fact that her mom now suffers from Alzheimer's disease.

Kate Walsh, who plays as Derek Shepherd's (Patrick Dempsey) former wife Addison Montgomery, built her career in "Grey's Anatomy." However, recent reports have revealed that Walsh is battling a brain tumor while also taking over Hollywood."The words 'brain tumor' were never in my zeitgeist," Walsh told Cosmopolitan.

"I went in for the MRI, and you know it's serious when they don't even wait, they're like 'hey, the radiologist wants to see you.' And she starts to say, 'Well, it looks like you have a very sizable brain tumor' — and I just left my body.

Grey's Anatomy is a hospital drama that focuses on Meredith Grey (Ellen Pompeo), one of several third year residents at a Seattle Grace hospital.

Along with her colleagues, Meredith struggles to maintain relationships while staying sharp at work.

Known for the heartbreaking drama and memorable quotes, "Grey's Anatomy" has amassed quite the following in its 14-season run.

Characters were well-received by the fandom, and one particular doctor seemed to worm her way into everyone's hearts.

Arizona Robbins (Jessica Capshaw) turns out to be gay and now Callie Torres (Sara Ramirez) is now her partner.