You say it: these three words do not seem to have anything in common. All the same, I have to use them together, as you do so.
In fact, I got to know from sufferers of anxiety that many of them get more anxiety symptoms when they eat these sweets.
The same thing can be said of drinking coffee. The drink contributes to anxiety. If coffee is taken as a short espresso, like the Italians do, it has no influence on the nervous system. On the other hand, if you brew your coffee the American way, too much caffeine is solved in the water and then it can harm you. If you limit the intake of this coffee, it is ok. Limiting it, means not to drink more than a maximum of two cups. If you have the same problems with these food stuffs, just try not to intake them.
There are many other good sweet nutrients or stimulating drinks or foods that do not harm your body and especially do not harm your nervous system.