Vanessa says that she’s physically and mentally afraid of most food and fears that if she eats, she will choke and die. The young woman, who says she suffers from Avoidant Restrictive Food Intake Disorder (ARFID), says she hasn’t had a meal in almost four years and survives on protein shakes, ice cream, water and “safe foods.”

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“I feel like a prisoner in my own body,” Vanessa says. “ I feel like I’m knocking on death’s door.”

Her husband, Michael, says he’s at his wits’ end because Vanessa is slowly killing herself.

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In the video above, Vanessa takes viewers through a day in her life. See what happens when she attempts to eat and drink. And, she shares how she believes her condition started. On Friday's episode, hear what Dr. Phil thinks may be driving Vanessa’s behavior. Check here to see where you can watch.

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What Dr. Phil Says May Be Causing Woman’s Food Disorder