Asian hazel
Corylus heterophylla
Corylus heterophylla, commonly known as the Japanese hazel or broad-leaved hazel, is a traditional plant primarily found in East Asia. While its use in traditional medicine has not been extensively documented, studies have shown that extracts from its male flowers may be effective in preventing cognitive decline by modulating gut microbiota and microglial polarization. The extract also demonstrated significant reduction of oxidative stress markers both in vitro and in vivo. However, the evidence is currently limited to these findings, and further research is needed to confirm these effects. No major safety concerns or drug interactions have been reported for Corylus heterophylla; however, as with any plant extract, potential side effects cannot be entirely ruled out without comprehensive clinical trials.
- Best evidence
- D
- Cautions
- —
Informational only. Traditional use does not mean proven effectiveness. Evidence and safety vary — check the cited sources.
What the science says
- Corylus heterophylla male flower extract showed significant therapeutic efficacy in preventing cognitive decline associated with hippocampal neuroinflammation, through modulating gut microbiota and microglial polarization.
- The study optimized extraction conditions for Corylus heterophylla male catkins and found their extract reduced oxidative stress markers both in vitro and in vivo.
- The study using an optimized MaxEnt model found that Corylus heterophylla's suitable habitat in China may decrease slightly under future climate scenarios, shifting northward.
- This study identified optimal roasting conditions and key metabolic pathways influencing flavor in 'Dawei' hazelnuts.
Frequently asked questions
What is Asian hazel?
Asian hazel (Corylus heterophylla) is a plant documented in FolkKB's traditional-medicine reference, drawn from sourced literature and cross-checked against the evidence.
What does the scientific evidence say about Asian hazel?
4 sourced findings are recorded for Asian hazel; the strongest carries evidence grade D. For example: Corylus heterophylla male flower extract showed significant therapeutic efficacy in preventing cognitive decline associated with hippocampal neuroinflammation, through modulating gut microbiota and microglial polarization.
How strong is the evidence for Asian hazel?
The strongest finding for Asian hazel carries evidence grade D — preliminary or traditional. Grades run A (strongest) to D (preliminary or traditional).
Is Asian hazel safe? What are the side effects?
No major safety issues are recorded for Asian hazel in our sources, but the data may be incomplete. Consult a qualified professional before use.
Does Asian hazel interact with medications?
No drug interactions are recorded for Asian hazel in our sources. This does not rule them out — check with a pharmacist.
What are the common names of Asian hazel?
Asian hazel is also known as: leščina raznolistnaja.
Is Asian hazel a proven treatment?
No. FolkKB is informational only. Traditional use and early findings are not proof of efficacy or safety — consult a qualified professional and never self-treat.
Sources
- T2 Comparative analysis of flavor profiles in Chinese hybrid hazelnut (Corylus heterophylla × Corylus avellana) under different roasting conditions using HS-SPME-GC-MS and UPLC-MS/MS. literature abstract metadata
- T2 Optimisation of the flash extraction process for male catkins of Corylus heterophylla and evaluation of their oxidative stress resistance. literature abstract metadata
- T2 Predicting the potential distribution of Corylus heterophylla in China under future climate change using an optimized MaxEnt model. literature abstract metadata
- T2 From Microbiota to Metabolomics: How Corylus heterophylla Fisch. Male Flower Extract Shields Mice from Cognitive Decline. literature abstract metadata