Is sugar bad for you?
This website has managed to find 146 reasons as to why sugar is bad for you- http://www.rheumatic.org/sugar.htm but it doesn't mean that it is scientificly proven to be bad for you.
Is sugar good for you?
Sugar is not bad for you its only when you have to much is it bad just like fat, protien, carbs, minerals, etc. to much of anything is bad and same as to little is bad. Everything is okay in moderation.
Is '5 a day' bad for you?
There is nothing on the internet saying the '5 a day' is bad for you so I have no proof.