And how do we address and prevent them?
Almost anything taken to a ridiculous extreme is bad for you. Problem is, a paleo approach is ridiculously extreme from the SAD-conditioned point of view, so it can be difficult for newcomers to use good judgement about their food choices. While most people see vastly improved function almost immediately, many have made and will make changes to their lifestyle that, while technically within the paleo milieu, still lead them into poor health.
Which health problems are most likely to be encountered by paleo beginners, and what are the most common solutions?
Edited to add: "Fanataicism" was a bad choice of words, as most of the answers seem to be focused on that. Let me try again.
There are a lot of threads on here about some new issue or another that has cropped up since starting paleo. Usually there is a simple fix, but when I see the same problem coming up again and again that tells me there's a problem somewhere, and finding common threads can help us improve, refine and "hack".
Here are some examples:
What have you noticed?