I just spent ten minutes searching “sucralose and [depression/Insomnia/bladder issues/headaches/cancer].”
Each of the searches ended up with notes such as “nothing in medical literature shows that sulacrose is in any way harmful” or “no such effects were found, and FDA’s approval is based on the finding that sucralose is safe for human consumption.”
Many of the sites determined that any myths (a word that showed up multiple times) originated from “studies” funded by the Sugar Association. Yes, there is a sugar lobby.
I will add, the FDA drew their findings on 110 separate studies, not one which found negative effects. And two months ago, PepsiCo switched from Aspartame to Sucralolose for their diet drinks, citing safety. Other major chains are also switching to Sucralose, as the science shows it is safe.
It would be interesting if you have your dietician cite the studies or sources that link sulacrose to any of the five symptoms she listed.