
John Groeger
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John Groeger is a professor at Nottingham Trent University with over 20 years of research experience in sleep and its related disorders. He has co-authored studies examining the efficacy of GABA supplements and the complexities of their effects on human sleep and relaxation.
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Prof John Groeger of Nottingham Trent University has studied sleep for over 20 years and co-authored a review on the efficacy of oral Gaba intake.
‘Gaba is the off switch of the brain’: Is it also the answer to better sleep, sobriety and less anxiety? | Life and styleThe Guardian·
United Kingdom· 2025-02-19




