Thoughts on Aspartame, Red40, etc

Checking in on thoughts regarding Red40 and Aspartame. Both give me terrible headaches since I was a kid, but everyone always thought I was crazy for saying that. But now both are gaining more traction as being absolutely terrible for you. Everyone I know who drinks diet soda drinks, especially Diet Coke, are super addicted to them and get very defensive if you say it might be bad for them. Red40 is also in way too many things, like every candy and red drink.

Also, unrelated, but Flouride messed up my teeth permanently with flourosis, since my hometown's water was pumped full of it. I've recently switched to xylitol and hydroxyapatite toothpastes.