"For instance a honey bee lifespan is @50-80 days normally ,on a normal diet of honey from nectar.
On a diet from sugars from fruits ,bees lifespan shortens to just 12 days."
@SeaWalnut: Does this mean when a bee kepper Feeds his bees in winter with sugar water which is normally be done - the life time of those bees in winter is shortened so extreme?
Sugar is a lot better for bees than fruit fructose.
Sugar,sucrose,the bees turn it into glucose and fructose.
Only fructose is verry bad for them and even for humans ,if the diet has only fructose ,we wouldnt live too long because we need glucose and also the fructose its metabolised by the liver.
Fructose in normal ammounts like from consuming fruits its healthy for us just a diet based on only fructose and no otther carbohydrates its bad.
Fructose is as bad for our liver exactly like alcohool is .
We can eat 50 grains fructose daily or 40 grains alcohool daily ,but in excess it will cause cirrhosis.