Eh, fruits are the core diet of primates, infact most primates wait for the fruits to start ferment which increases their caloric value while actually reduces the fiber count.
Humans have evolved eating sugar just fine, fruits and fermentation were used before we learned to walk, and other sources of sugar including honey were also commonly consumed.
You can easily look at the diets of "modern" hunter gatherers and see just how "low carb" it is.
Don't get me wrong eating too much sugar (glucose/fructose/sucrose) isn't good for you, but sugar isn't the only carb out there.
Until the 1900's starch fed the world, it still does, some how what is succesfully feeding the 5.5-6bln poor people of the world is no longer good for you.
Humans have evolved eating sugar just fine, fruits and fermentation were used before we learned to walk, and other sources of sugar including honey were also commonly consumed.
You can easily look at the diets of "modern" hunter gatherers and see just how "low carb" it is.
Don't get me wrong eating too much sugar (glucose/fructose/sucrose) isn't good for you, but sugar isn't the only carb out there.
Until the 1900's starch fed the world, it still does, some how what is succesfully feeding the 5.5-6bln poor people of the world is no longer good for you.