Read the Labels and Ingredients Lists!
.......but be aware that if you are reading a label, you are likely not eating "food". How many of the foods in the fruits and vegetables, dairy and meat sections of the grocery store have ingredients lists?
Milk from grass-fed cows
Companies try and "trick" their ingredient lists by splitting sugar into various categories to get them further down the list so that the consumers think that there is less of it in the food they are selling.
Here are some of the other words found in the ingredient lists that are SUGAR:
Barley malt syrup
Cane juice crystals
Coconut palm sugar
Corn syrup solids
Dehydrated cane juice
Evaporated cane juice
Free-flowing brown sugars
Fruit juice concentrate
(High-Fructose Corn Syrup)
See article in OrganicWellness discussing Ketchup: theorganicwellness.com