Mexico suffers from a sugar deficiency?

Mexico has an overweight-plus-obesity rate of 70%, and 15% of the population has type-2 diabetes. You might think that a key public health message might be “eat less sugar.”

But check this ad on a city bus:

Translation:

• Cane sugar
• It’s natural
• A little happiness each day
• Only 15 calories per tablespoon 

In other (implied) words, “eat more sugar! It’s good for you!”