Each month our editorial team sifts through hundreds of papers and curates notable findings—for practitioners and informed readers who want to stay current with the evidence. Subscribe to the monthly Research Digest for expert analysis and concise summaries of key papers.
3 papers
This 2013 review explains how physical and psychological stress change the brain and body. It describes how stress activates the HPA (hypothalamic–pituitary–adrenal) system and alters brain chemicals such as GABA, dopamine, norepinephrine and serotonin. The paper also covers short-term memory effects, animal models used to study chronic stress, and both…
In a randomized, double-blind, placebo-controlled trial, people took supplements containing the mushroom Hericium erinaceus for 12 weeks. The researchers gave three mental tests and found that only the Mini-Mental State Examination (MMSE) showed a statistically significant improvement and less decline in the group taking the mushroom. The authors say compounds…
This systematic review examined human studies of plant-derived nootropics across six cognitive domains. It included 256 papers published from January 2000 to November 2021 found via PubMed, Cochrane and Scopus. The review reports that Ginkgo biloba was most relevant for perceptual and motor functions, Bacopa monnieri improved language, learning and…
