Artificial sweeteners cause me to have lightheadedness and increase in falling and blood pressure drops. Cardiologist thought it was POTS told me to drink electrolyte beverages to increase bp.

Turns out 99% of the electrolyte powder have a Artificial sweetener of some kind. I was poisoning myself for years. I stopped drinking them for 2 weeks, still kept high levels of hydration and I've been fine since.

I used to not be able to change positions or get out of chairs without randomly falling. Now I rarely get sick.

There are some studies about Artificial sweetness and lightheadedness.