Sharecare Now's #1 Online Depression Influencer, licensed psychotherapist Julie Hanks is Director of Wasatch Family Therapy and has provided outpatient psychotherapy services to children, adolescents, adults, couples and families with mental health and relationship problems for more than 20 years. She is an active blogger on Sharecare.com, PsychCentral.com and Daily Strength.com.

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One of the nation's foremost experts on cancer, not only did Dr. DeVita help create the first effective treatment for Hodgkin's disease, turning a fatal illness into a curable one – he headed up the National Cancer Institute from 1980 to 1988. He's a must-go-to for advice on how to avoid, beat or live well with cancer.

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Internal medicine specialist Robin Miller is an expert in integrative medicine and has blogged regularly for Sharecare on everything from gas to the mammogram debate. Author of a book on childrens' health and a woman’s guide to flourishing at midlife, her mission is to help patients’ maximize their wellness and live happy, healthy lives.

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Got sleep problems? Psychologist Michael Breus, author of Good Night: The Sleep Doctor's 4-Week Program to Better Sleep and Better Health and The Sleep Doctor's Diet Plan: Lose Weight through Better Sleep, knows what's standing between you and the snooze you need – and has the simple moves that can help you get it.

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Here's a fitness expert who walks the walk—or rather, tightrope: Kristy Lee Wilson is an elite gymnast who performed with Cirque du Soleil for 10 years; she's now a fitness competitor and recently won the title of Ms. Fitness Florida. She is an ace at creative fitness!

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Few would argue that preventing disease is paramount to healing the country's collective health woes. Dr. David Katz is a champion of this approach to medical care, having founded Yale University's Prevention Research Center and the non-profit Turn the Tide Foundation, which focuses on fighting obesity.

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From battling wrinkles to staving off skin cancer, dermatologist Ellen Marmur, MD, shares what it takes to keep skin young-looking and healthy. author of Simple Skin Beauty: Every Woman's Guide to a Lifetime of Healthy, Gorgeous Skin and chief of dermatologic and cosmetic surgery at Mt. Sinai Medical Center in New York.

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