natural sugar are fine
in fact it's good for the body.
as the normal sugar that we take everyday are processed sugar which
contains HIGH Concentration, thus taking in fruits are okay.
But it depends on how much fruits you eat everyday or every
meal.
Pineapple - just take a few slice will do, as it will encourage
acid to form and start to digest the food inside faster, thus it's
not good when taken in a lot of amount each time.
Correct me if I'm wrong, as I'm still learning on health
issues.