As a life scientist I can't comprehend someone learning about berries with a 'hidden agenda'.
Since you're a "life scientist" that's pretty much what I expected you to say.

*shrug*
I can't know what I don't know. I do know that if someone says 'STOP DON'T WALK ANY FURTHER!' I'll probably ask why and they'll probably explain. If they refuse the explain, I would obviously press on and do some investigation of my own. I don't think there is any lack of explanation why foods are regulated for safety. This is not to say that I agree with all regulations, but the people involved can't all be evil and in it for 'hidden agendas'. It's statistically improbable.