Not really. Latest will always show the, um, latest threads being replied to. Pharma might be a bit more active recently but I don’t think it generally dominates the top of the page. Could just as easily be stuff in Off-Topic, PWI, BSL, etc.
Like right now, Pharma is 4 of the 12 latest posts, PWI is 3 of them. I kinda get what you mean though, if you’re totally 110% not even the slightest bit interested in seeing it.
In any case, go into your profile: Preferences… Categories… Muted…
That should keep anything in that forum from appearing for you.