Actually in this I am referring to the United States CDC (Centers for Disease Control and Prevention). These are the people called in when there is a health threat that threatens killing all humans on the planet.
I found that the CDC is actually confused about simple nutrition. Also they contradict themselves. U.S. nutrition divides carbs into simple carbs and complex carbs. The simple carbs are sugars. The complex carbs are starches and dietary fiber.
They say that fruits are starches, not sugars. Later they sort of contradict this. But this may stem back to a theory in the 1960s that was wrong. The U.S. got rid of the food pyramid and replaced with a food plate. They do say that 50% of your diet should be fruits and vegetables.
There is a simple way to determine if a food is mostly sugar or mostly starch. If it is mostly sugar, it will taste sweet. So they say that fruit is not sweet. Actually that is the case with unripe fruit.
Here is where you can see exactly what the CDC says and how they contradict themselves. The Biggest Myth in Health and Nutrition
Fun fact: the original food pyramid had fruits and vegetables at the very bottom of the pyramid, making them what you should eat most of, and dairy and meat was closer to the top, being the foods you should eat least. Grains/starches were above fruits & veg, being the things which should be eaten in the second-largest quantity.