The 'Beeb' are running a topical story today WRT an easy way to find out how much sugar is lurking in foods.
It's a smart-phone APP that reads bar-codes and tells you how much sugar there is in a product. The APP is called "sugar smart app", from Public Health England, on Google Play store or Apple App store
Sounds like a good idea to us!
Here's a link to the story www.bbc.co.uk/news/health-35199889