I've never had any problems taking a break and I've been using and growing for just on 30 years, just keeping busy for the first few days is enough to distract you from any of the mild withdrawal symptoms you might get, the person you are debating with has obviously never been an mj user or he/she would know better than to spout such shit.

Also, are there any non biased databases that have reliable marijuana/cannabis research?
No, most research is full of DEA propaganda, I'm sick of the way those pricks keep sticking their ugly faces into my lifestyle and I don't even live in the US!