Marigold - Yeah, I get about the genes. Not much to do about that (yet). I'm looking for some tell-tale signs that a person might be prone to paradoxical reactions. Do you feel that you were experiencing interdose withdrawal before you began your taper? Were your first few cuts easy or difficult (and how big were they)? How quickly do you feel you became tolerant to the benzo? How quickly do you feel you became dependent on it? When the paradoxical response began, was it a sudden flip or slow to occur?
That's the kind of info I'm looking for. Dosing/tapering history and related symptoms. If you prefer, you can send it to me via PM. Obviously, no action is required.
You can for sure find out if a person is a slow or a fast "detox-er". This can be permanent (genetic) or temporary (not mutations, depletions but inactive genes which could be activated by adjusting lifestyle and diet). You can also measure the activity of thyroid and adrenal glands and then quickly know if someone is made to react what we call paradoxical or not. My doctor can tell exactly how I reacted on each med, even the symptoms I had while being on the particular med. It is just biochemistry, no mystery at all.
You could read the book "dirty genes" and get a short insight. Slow GST and COMT genes for example are often found in people who get into tolerance quickly, react paradoxically and over-react on chemicals..
For example with my nearly non active GST system I can barely tolerate any chemicals and meds but I would react wonderful on a chemo for cancer treatment, because my body is not able to get rid of these meds at all. that's one point I would actually profit.
So it makes no sense to look on taper history and related symptoms, you need to dig deeper. No way to explain to people "okey, because you reacted with this or that - you are prone for paradoxical effects.." It is not so easy

And then, you still don't know about the numerous system in the body of a certain person. A lack of magnesium can cause symptoms which may look like paradoxical reactions, but in fact are made by other reactions.
The only statement I could make is that I think (personally!) that if you have been on 20 meds, and all did only harm to you, the chances that you are just not made to take these meds are high. No matter for what reason. The body is wise!