Kim Peiffer
Apr 14, 2016 @ 1:45 pm

A few years ago when Cameron Diaz turned 39, journalists consistently started asking her how she felt about turning 40. And the experience prompted the now 43-year-old actress to ask herself an important question: "Why should I be afraid, is there something that is going to happen?"

During a candid interview with InStyle, the actress explained. "At the age of 39 I was feeling great—I was very excited about turning 40," she said. "And I thought, I get it: They're saying, 'Aren't you afraid that the end of your career is about to happen because you're turning 40?' And I thought, that is just so crazy to me—that that's the way our society looks at aging."

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This led to the actress's research into the process of aging, which folded into her newly released second book, The Longevity Book: The Science of Aging, the Biology of Strength, and the Privilege of Time ($17; amazon.com).

In the video above, the established author—who spent 26 weeks on the New York Times bestseller list with 2013's The Body Book ($15; amazon.com)—shares her thoughts on aging, the one thing she has stopped doing on her 40s, and the five pillars that keep her feeling young and beautiful every day.

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Watch the clip at top to see Diaz wax poetic about women embracing their age, instead of being frightened of it. Cam, we certainly love you for that.

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