Scientific evidence that supports yoga is steadily rising. Yoga acts on the mind and body as a unit while scientific studies concentrate on specific aspects of it so some study the mind angle (eg. anxiety and depression) and others the body angle (eg. Back Ache).
PubMed is run by the US National Library of Medicine National Institutes of Health. These studies are very authoritive so are marked 'PubMed'.
The Minded Institue is run by Heather Mason. They publicise yoga research, conduct research of their own and train medical people and yoga teachers in evidence based yoga therapy.
Sat Bir Singh Khalsa, Ph.D is assistant professor of Medicine at Harvard Medical School and certified Kundalini Yoga instructor, has conducted clinical research of yoga and meditation for more than a decade. This is his book Your Brain on Yoga (Harvard Medical School Guides)
This study shows yoga can help with depression PubMed - Yoga for depression: a systematic review and meta-analysis.
This Google scholar search for 'ptsd yoga study'comes up with a huge list.
The Trauma Centre is one of an increasing number of organisations conducting their own research and using evidence based techniques. This study Trauma-Sensitive Yoga: Principles, Practice, and Research is interesting.
Dr. Deepah Sharan runs an RSI treatment centre in India. He recommeds a wide range of ways to deal with RSI including yoga. Dr. Deepak Sharan's Yoga page
Dr. Dharma Singh Khalsa, M.D heads the Alzheimers Prevention organisation in the USA. He has studied the use of Kundalini Yoga's Kirtan Kriya Alzheimers Prevention
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