To the OP:
You do know that the basis of paleo/primal is that some foods (such as grains and legumes) are newly introduced, have poisonous reactions within our bodies and cause multiple health problems, right? And that paleo/primal might be lower carb but that with eating all those fruits and veggies, and perhaps some sweet potatoes, you can get your diet to be fairly high in carbs if you want?
You do also realise that changing what you are doing based on a 'report' after only three weeks eating this way may be seen as foolish, right?
I'd suggest that you read gnolls excellent analysis of reported scientific testing at http://www.gnolls.org/2893/always-be...ally-tells-us/ and if you still think the report has any validity that you post a link to it here. (Yeah it's about a red meat article but it's relevant to most stuff you read)
In the meantime I'd strongly suggest you drop your grains and legumes because they aren't doing you any good at all, and perhaps spend a little more time learning about this way of eating (aka what we evolved eating) and looking skeptically at scientific report from both sides of the fence - and I don't mean summaries in the popular press.