[gojomo]

I can't tell if you read the article -- but anxiety attacks, hallucinations, and seizures are reported in some percentage of people who engage in meditation.

There are an amazing variety of human brains, and if you accept the results that meditation causes measurable physical changes in brain structure, you should also be open to the idea that for some brains, those changes might interact badly with other preexisting (and quite possibly inherent) brain tendencies.

People should know that if they have bad reactions, it's not necessarily a matter of 'doing it wrong', or just fighting to get over an initial challenging hump. Stopping might be the right thing for their brain health.