Free images results:

Diet pictures, stock photos and images

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Diet Stock Photo
Author: 3pi
Diet 2 Stock Images
Author: Lecajun
Fruits Stock Photo
Author: Skdesign
Pasta flower Stock Photos
Author: Ever
Pear slices Royalty Free Stock Images
Author: Suti
Kiwi Stock Photography
Author: Radovan
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Also, here are some commercial RF-licensed images that match your search criteria:  
Diet concept Royalty Free Stock Image
Author: Wuka