Eh, if the structure as described (members list their interests and sit out where there is a conflict of interest) is working as intended then I don’t see why she can’t have a job giving opinions on the cancer risk of eggs or asbestos or whatever. She might even be positioned well to understand those risks.
But it absolutely stretches credulity that an org focusing on cancer has not had a discussion she needed to sit out of in five years. Which means either the structure is not working as described (bad), she’s lying out of her arse (worse), or this org is simply not having these incredibly important discussions (catastrophic).
I guess, but has there not been a conversation about vapes in that time? The risk profile is different but as far as I know cancer is still a concern?