Healthcare Triage did a review of the research years ago: <a href="https://www.youtube.com/watch?v=Mf82FfX-wuU">https://www.youtube.com/watch?v=Mf82FfX-wuU</a>
tl;dw: artificial sweeteners get a bad rap, multiple studies have found no harm, studies that did find harm were on rats (which often doesn't translate to humans), and the harms associated with excess sugar consumption are numerous, well-founded, and damning.