Could the sweetened drinks we're consuming be making us feel a little more anxious? A 2022 study looking at the effects of the artificial sweetener aspartame on mice suggests that it's a possibility that's worth investigating further.
That's my take, but It took overloading on sugar to get me there. My grandma made southern sweet tea as she called it. It was like sugar water lol. We went out to eat 10 years ago and I was thirsty, had 3 large glasses of sweet tea before the food came, spent most of the time in the bathroom and could no longer stand sugary drinks. Unsweet tea, or half as much simple syrup if I can choose.
So, no, you have no evidence to back up the assertion, it's just how you feel.
Use your head for more than memes.
If blaming me for your inability to back up your claims is your definition "using your head" I'm happy to continue going through life without doing so.