"Hmm, there is an unknown risk with it, do I really need this unhealthy candy" no
"Do i really need this vegetable" yes
For an analogy, if your neighborhood is unsafe, you don't stop going to school altogether, you probably just won't go out for a night stroll.
This kind of absolute logical statement is very stupid.
Also, consider that when faced with unsure studies, the fact that fruits and vegetables are part of healthy human diet for centuries longer than a dye has been, is a major factor.