Can meditation cause harm?

[Bring4th_Austin]

Personally, I find too much Light entering my 3rd eye to be disorienting. It causes some nausea, headache, and dizziness.
It's rather unpleasant. I have to close down my upper chakras sometimes.

Meditation sometimes opens them, but in a pleasant way. I've never gone into meditation when I had too much Light though.

Yes, I've experienced those disconcerting side effects as well, IGW.  There have been times when my attempts at consciously drawing in more light has resulted in a kind of "high" which was followed by a sort of "hangover" where I ended up feeling at an even lower vibration then when I started.  Personally, I've found it much more effective and sustainable to simply go about my "daily round of activities" while attempting to incrementally increase my vibrations.

It's confounding to me that Ra/Q'uo don't appear to demonstrate any concern for the possible ill-effects of these exercises when performed by sensitive people.  Or even to acknowledge that they exist.

I do agree with you that it's a bit odd that while there are constant suggestions to meditate with very little suggestion as to how to do so. But perhaps the vagueness of their suggestion is also why there aren't any cautions. For instance, when they say meditate, they don't specify the "drawing in more light" technique that you had issues with. I think the suggestion to meditate is more about finding something that does work for you rather than attaching to any specific idea of exactly what meditation is. Though more guidance and caution would be very helpful.

An example of harm from meditation that comes to my mind is a friend of mine who suffered from intense anxiety. I suggested meditation, as it has always helped with my anxiety, though I didn't give much instruction. Apparently the meditation just amplified the anxiety and sent her into a panic attack. Her therapist said that meditation can sometimes trigger that sort of response in anxious people.