I say this constantly but sometimes you listen better when it comes from the professionals. So here below is Joy Bauer's take on fruit juice. And remember you usually lose most of the fiber when you drink juices rather than eat the fruit. This is especially important for diabetics to remember.
"Real fruit" drinks like 100 percent fruit juice and fruit nectars have an aura of health, and while they do provide some vitamins and minerals, they're also loaded with sugar and calories. Swap your daily fruit-juice fix in favor of eating the whole fruit (like an orange), or drink naturally fruit-flavored, zero-calorie seltzer.