Chewing gum, calcium?
I've checked up on chewing gum on Cronometer and a danish nutrition database.
Cronometer tells me that sugar free chewing gum contains 20mg of calcium pr. 100g.
The danish food database, linked below, tells me that sugar free chewing gum contains 2360mg of calcium pr. 100g.
Same story with chewing gum that has sugar added, 0mg and 1760mg.
So what should I believe?