Sad to say, it frequently doesn't carry
For example, multiple studies (including from the National Academy of Science) have found no linkage between silicon breast implants and auto-immune diseases (such as MS), but Dow Corning was sued to bankrupsy anyway. All the plaintiff has to do is get an "expert" witness to say there might be a linkage and the juries almost always rule against the defendent. Of course, when people with scientific training are tossed off juries as a matter of course, it stands to reason those remaining are easily swayed by the "experts."