Diary of a rail fan in Kansai,Japan(Ver.2)

About world's rail news, general news, my train pictures, and travel diary)

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Why can you remember all the structures of each type of sugar?

edition.cnn.com

When I read the article, I thought that the last section of the article would not be understandable for general people except for chemists. Who can distinguish complicated sugar from simple sugar?
So, The article should have said "When you see ingredients on each food , if you find letters listed below, it would be better for you to eat it."

Otherwise, even professors cannot extract which type of sugar is not favored?