Just tried sensory deprivation for the first time two weeks ago, and I think I will be going once a month at least. At least until I master meditation in noisy environments. The research seems to depict it as being more effective for anxiety than depression. Which to me makes sense; anxiety is due to too many stimuli, while depression is a lack of fulfillment and satisfaction.
I felt sustained joy and peace for the first time in years after my first float. Granted lately I've made tons of other positive changes in my life and taken my supplement stack to the grandmaster level, but I strongly suspect sense deprivation therapy is playing a major role in any reduction of symptoms I may be seeing. The cause and effect were temporally proximate, and there was a strong state correlation between the post-float relaxation and the dark meditation in the moment.
The effects may be long-lasting, resolve a multitude of symptoms, require a small number of treatment sessions (as few as 1), and carry little to no risk (float therapy is considered relatively safe and not to have side effects). In a risk-benefit analysis, I find no reason for anxiety sufferers not to try flotation-REST therapy. They may be pleased with the results. Regardless, being alone with your thoughts is a wonderful test of mental strength and positivity. For many people, having nothing but their thoughts is an utterly humiliating & tragic experience.
Promising effects of treatment with flotation-REST (restricted environmental stimulation technique) as an intervention for generalized anxiety disorder (GAD): a randomized controlled pilot trial
https://www.ncbi.nlm...les/PMC4807536/
"Regarding clinical significant change, 37 % in the treatment group reached full remission at post-treatment. Significant beneficial effects were also found for sleep difficulties, difficulties in emotional regulation, and depression, while the treatment had ambiguous or non-existent effects on pathological worry and mindfulness. All improved outcome variables at post-treatment, except for depression, were maintained at 6-months follow. No negative effects were found."