Cobie Smulders reveals she had ovarian cancer at age 25

(Women's Health)

(Women's Health)

HOLLYWOOD, CA - APRIL 13: Actress Cobie Smulders attends the premiere of Marvel's "Avengers: Age Of Ultron" at Dolby Theatre on April 13, 2015 in Hollywood, California. (Photo by Kevin Winter/Getty Images) (2015 Getty Images)

Cobie Smulders is revealing more than just her first topless photos in this month’s Women’s Health magazine, opening up for the first time about a serious health scare.

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The actress, who stars in the "Avengers" franchise as "S.H.I.E.L.D." Agent Maria Hill, revealed that she was diagnosed with ovarian cancer at age 25, while filming the third season of "How I Met Your Mother."

"I had tumors on both ovaries," she tells the magazine, "and the cancer had spread into my lymph nodes and surrounding tissues."

While doctors were able to removed the cancerous tissue through multiple surgeries over the course of two years, Smulders admits she doesn’t know if she’ll ever feel "cancer-free."

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"Now that I'm five years out, I'm trying to think of it as a positive thing and what can I learn from it," she says. "And if I can create more awareness, I'll do it."

Read more about Cobie’s story in the May 2015 issue of Women’s Health, on newsstands now.

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