Stan Grof, 'the depths of the psyche'

https://www.youtube.com/watch?v=3uCySQOMB-4

Anxiety Risk Gets Reduced with Curcumin | NaturalHealth365

https://www.naturalhealth365.com/anxiety-depression-2828.html

Dr. Christopher Ryan: Sex at Dawn

https://vimeo.com/16031664

Twelve Things You Should Know about Holotropic Breathwork

https://iahip.org/inside-out/issue-55-summer-2008/twelve-things-you-should-know-about-holotropic-breathwork

Hyperventilation Syndrome

"Breathwork and alkalization of the blood: more data on the confusion about the so called "hyperventilation syndrome" also see my review ... 

https://www.academia.edu/9759923/Holotropic_Breathwork_Models_of_Mechanism_of_Action

http://emedicine.medscape.com/article/807277-overview

Inadequate Homocysteine Metabolism a Theory of Depression

Homocysteine and Neuropsychicatric Disease 2015 CME