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When a doctor told Susan Levin her 4-year-old son, Ben, was autistic, she was shocked. It was October 2007, and autism wasn’t mentioned in the media nearly as much as it is today.

“I remember thinking, ‘Oh my God. What are we going to do?’ ” Levin recalls. “Everyone knew autism was a lifelong disorder and couldn’t be cured.”

Except that in Ben’s case, it could be. And it was.

The family’s journey — the many treatments tried and dismissed, from biomedical interventions to speech therapy to occupational therapy and more — is detailed in her new memoir, “Unlocked: A Family Emerging From the Shadows of Autism.”

Levin doesn’t call this particular cure a silver bullet for autism: There is no silver bullet, no one-size-fits-all approach. Rather, she credits his transformation to a number of things, including a home based and child centered social-relational program called the Son-Rise Program.

But one of the biggest factors was what was on his plate.

“Hippocrates was right when he advised, ‘Let food be thy medicine and medicine be thy food,’ ” she says.

Click for more from the New York Post.