[neonsunset]

Because people not suffering from migraines did not have firsthand experience and assume it is the same as other conditional triggers such as sunlight or anything that induces vasodilation or especially vasodilation after vasoconstriction (workout + caffeine comedown into a hot shower can do you in easily).

[Workaccount2]

But you are running off of sample size 1. That's why people don't like your comment.

There is a massive difference between "Aspartame causes migraines" and "Aspartame causes migraines for me"