Anxiety, and Brain GABA Levels: A Randomized Controlled MRS Study by Streeter et al. published in THE JOURNAL OF ALTERNATIVE AND COMPLEMENTARY MEDICINE [Article Link]
Reported Conclusions: The 12-week yoga intervention was associated with greater improvements in mood and anxiety than a metabolically matched walking exercise. This is the first study to demonstrate that increased thalamic GABA levels are associated with improved mood and decreased anxiety.
The group discussed that the paper only presents benefits after one acute intervention but less than significant impact across the tonic 12 week intervention. The details of yoga postures used was not provided.