http://www.thehumanist.org/humanist/MaryGarden.html
http://www.behind-the-tm-facade.org/tra ... tracts.htmDr. Solomon Snyder, head of neuroscience at Johns Hopkins University, warns that during meditation the brain releases serotonin. This may help those with mild depression but too much serotonin can cause, in some, a paradoxical relaxation-induced anxiety. Instead of relaxing during meditation, these people become distressed and may even have panic attacks
The dangers of meditation - http://www.openbuddha.com/2002/09/06/th ... mediation/Abstract: This article reviews 75 scientific selected articles in the field of meditation, including Transcendental Meditation among others. It summarizes definitions of meditation, psychological and physiological changes, and negative side-effects encountered by 62.9% of meditators studied. While the authors did not restrict their study to TM, the side-effects reported were similar to those found in the "German Study" of Transcendental Meditators: relaxation-induced anxiety and panic; paradoxical increases in tension; less motivation in life; boredom; pain; impaired reality testing; confusion and disorientation; feeling 'spaced out'; depression; increased negativity; being more judgmental; feeling addicted to meditation; uncomfortable kinaesthetic sensations; mild dissociation; feelings of guilt; psychosis-like symptoms; grandiosity; elation; destructive behavior; suicidal feelings; defenselessness; fear; anger; apprehension; and despair.