Why do we now have advertisements for sugar?

"Only 16 calories per teaspoon!" they boast.  "Not made of cancer!" they claim implicitly.  "And only made a little bit of diabetes," they mutter shamefacedly.

This is absurd.  It's sugar.  I understand the necessity of advertising the calorie-free sweetener du jour, because it's not real, and it has a stupid name.  But sugar is a real thing.  Are we next going to advertise flour?

I am reminded of Mr. Ingleby's response when Lord Peter wonders helplessly why one would buy butter when bombarded with advertising for cheaper and allegedly just-as-good margarine: "You don't need an argument for buying butter. It's a natural, human instinct."