Not yet investigated
What we have so far
Randomised evidence supports release for a classic anterior tie with a feeding problem, and does not support the posterior and lip-tie releases now sold alongside it.
This star is on the map because the show intends to take the question apart properly — the trials, how it is actually tested, whether the thing sold is the thing studied. That work is not done yet, and nothing here should be read as a conclusion. When the investigation is published it will appear on this page.