Dr. Ian Smith breaks down 'The Clean 20 Challenge'

- He's helped millions of people lose weight and improve their health and now Dr. Ian Smith is back with a challenge. 

Smith stopped by Good Day Atlanta with a preview of his new book "The Clean 20 Challenge," and talked about the importance of clean eating. H also talked about why he believes people should avoid processed foods. 

Two of Dr. Ian Smith's Facebook fans joined him on "The Clean 20" journey and return to show their results.  See before and after in the video.

For more information on Dr. Ian Smith or "The Clean 20 Challenge," click here.

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