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.
12 papers
Chronic Fatigue Syndrome (CFS) is defined as more than 6 months of new, disabling physical and mental tiredness that is not relieved by rest. Up to about 85% of people with CFS report cognitive problems called “brain fog,” described as slow thinking, trouble focusing, confusion, forgetfulness, or a hazy mind.…
Essential oils (EOs) are extracted from plants and contain active components with therapeutic effects. Evidence shows that various types of EOs have a wide range of health benefits. In our previous studies, the potential of lavender EO for prevention and even treatment of depression and anxiety symptoms was demonstrated. The…
This meta-analysis combined 32 randomized trials from 25 articles to see if aromatherapy lowers anxiety. It found that both inhalation and massage aromatherapy were linked with lower scores on a common anxiety scale (STAI). The review noted no reported side effects, but said more research is needed on the right…
This 2020 review looks at terpenoids in essential oils and how they might help with anxiety and depression. Animal studies reported that some essential oils and components like linalool reduce anxiety-like behavior. The authors suggest these effects likely come from changes in glutamate and GABA brain signaling. They also note…
This scoping review looked at research from 2012–2022 on how essential oils affect the nervous system. The authors included about 70 studies in humans, animals, and cell models. Across these studies, different oils (especially lavender and citrus) and mostly inhalation methods were linked to effects on stress, sleep, mood, pain,…
This randomized trial tested rose water inhalation in 46 hemodialysis patients. One group inhaled rose water for 4 weeks and the other group had no intervention. After 4 weeks the treated group had lower average state and trait anxiety scores, and the reductions were statistically significant (P < 0.001). The…
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…
This Healthline article explains a body-based method called shaking therapy (also called TRE or neurogenic tremoring). It says some experts believe gentle shaking can help the nervous system release tension and calm stress. The article gives simple ways to try it, notes possible benefits people report, and also clearly says…
The study tested why people differ in how they see motion. Participants viewed the same moving images but some reported motion assimilation and others motion contrast. The researchers measured brain chemicals with magnetic resonance spectroscopy and found that higher levels of the excitatory chemical glutamate–glutamine (Glx) in the dorsolateral prefrontal…
This was a small, preliminary study that tested two short mindfulness setups: (a) an audio-only guided practice and (b) a multisensory experience (smell, sound, light) followed by a biofeedback display of the user’s heartbeat. Sixty-eight people took part. Heart-rate variability (HRV) data showed an increase in parasympathetic activity after the…
The paper says that psychedelics can produce mystical-type beliefs, like the idea that reality is a loving consciousness. The author argues we should not call these beliefs delusional just because they clash with naturalism (the view that only natural stuff exists). Instead, the paper recommends “metaphysical agnosticism” — holding off…
This review explains that smells reach the limbic brain very quickly and can change emotional and stress responses. It highlights evidence that certain essential oils — especially lavender, bergamot, and rose — can alter brain chemistry, lower stress hormones, and shift autonomic markers within minutes. Some studies reported cortisol drops…
