Hempseed extract improved memory and reduced brain aging markers in rats with accelerated aging
An extract from hemp seeds (Cannabis sativa) improved learning and memory in aging rats by boosting antioxidant defenses, reducing brain inflammation, and decreasing Alzheimer's-related protein changes.
Quick Facts
What This Study Found
Rats given D-galactose to induce accelerated aging and memory impairment showed significant improvement when simultaneously treated with hemp seed extract (EFC). The extract improved behavioral performance in the Morris water maze, a standard test of spatial learning and memory.
At the cellular level, EFC increased superoxide dismutase (an antioxidant enzyme) while reducing malondialdehyde (a marker of oxidative damage) in the hippocampus. It also inhibited astrocyte activation (a sign of neuroinflammation), reduced phosphorylated tau, and suppressed presenilin 1 expression, both markers associated with Alzheimer's disease.
Additionally, EFC improved organ indices for the heart, liver, thymus, and spleen, suggesting broader health benefits beyond the brain.
Key Numbers
EFC doses: 200 and 400 mg/kg daily for 14 weeks. Increased superoxide dismutase, decreased malondialdehyde in hippocampus. Reduced phosphorylated tau and presenilin 1. Improved Morris water maze performance. Elevated organ indices for heart, liver, thymus, spleen.
How They Did This
Rats received daily D-galactose injections (400 mg/kg) for 14 weeks to induce aging and memory impairment. Simultaneously, treatment groups received EFC at 200 or 400 mg/kg daily by oral gavage. Behavioral testing (Morris water maze), brain biochemistry (antioxidant markers, inflammatory markers, Alzheimer's-related proteins), and organ indices were assessed.
Why This Research Matters
Hemp seeds have been used in traditional Chinese medicine for centuries. This study provides a mechanistic basis for the cognitive-protective claims by showing effects on multiple aging-related pathways: oxidative stress, neuroinflammation, and Alzheimer's-related protein processing.
The Bigger Picture
Hempseed is a distinct product from psychoactive cannabis. It contains minimal THC but is rich in fatty acids, proteins, and bioactive compounds. The finding that hempseed extract targets multiple age-related brain changes simultaneously suggests its potential components work through complementary pathways rather than a single mechanism.
What This Study Doesn't Tell Us
Animal study using an artificial aging model (D-galactose injection), which differs from natural aging. The specific bioactive compounds in the hemp seed extract were not identified. Doses used may not translate to human consumption. The study was published in a complementary/alternative medicine journal.
Questions This Raises
- ?Which specific compounds in hempseed are responsible for the neuroprotective effects?
- ?Would these benefits translate to natural aging in humans?
- ?Is the effect cannabinoid-mediated or from other hemp seed components?
Trust & Context
- Key Stat:
- Hemp seed extract reduced Alzheimer's-related tau and presenilin markers in aging rats
- Evidence Grade:
- Animal study using an artificial aging model. Provides preliminary evidence but the chemical aging model and uncharacterized extract limit interpretation.
- Study Age:
- Published in 2017. Interest in hemp seed components for cognitive health continues in traditional medicine research.
- Original Title:
- Extract of Fructus Cannabis Ameliorates Learning and Memory Impairment Induced by D-Galactose in an Aging Rats Model.
- Published In:
- Evidence-based complementary and alternative medicine : eCAM, 2017, 4757520 (2017)
- Authors:
- Chen, Ning-Yuan, Liu, Cheng-Wu, Lin, Wei, Ding, Yi, Bian, Zhang-Ya, Huang, Ling, Huang, Hao, Yu, Kai-Hui, Chen, Si-Bang, Sun, Yu, Wei, Lei, Peng, Jun-Hua, Pan, Shang-Ling
- Database ID:
- RTHC-01355
Evidence Hierarchy
Tests effects in animals (usually mice or rats), not humans.
What do these levels mean? →Frequently Asked Questions
Is this about marijuana or hemp?
This study used hemp seeds, not psychoactive cannabis. Hemp seeds contain minimal THC and are used as a food product. The cognitive benefits observed likely come from non-cannabinoid components like fatty acids, proteins, and antioxidant compounds.
Should I eat hemp seeds for brain health?
While this animal study showed promising results, it used concentrated extracts at high doses in an artificial aging model. Hemp seeds are nutritious, but whether eating them provides meaningful neuroprotection in humans is unknown.
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Cite This Study
https://rethinkthc.com/research/RTHC-01355APA
Chen, Ning-Yuan; Liu, Cheng-Wu; Lin, Wei; Ding, Yi; Bian, Zhang-Ya; Huang, Ling; Huang, Hao; Yu, Kai-Hui; Chen, Si-Bang; Sun, Yu; Wei, Lei; Peng, Jun-Hua; Pan, Shang-Ling. (2017). Extract of Fructus Cannabis Ameliorates Learning and Memory Impairment Induced by D-Galactose in an Aging Rats Model.. Evidence-based complementary and alternative medicine : eCAM, 2017, 4757520. https://doi.org/10.1155/2017/4757520
MLA
Chen, Ning-Yuan, et al. "Extract of Fructus Cannabis Ameliorates Learning and Memory Impairment Induced by D-Galactose in an Aging Rats Model.." Evidence-based complementary and alternative medicine : eCAM, 2017. https://doi.org/10.1155/2017/4757520
RethinkTHC
RethinkTHC Research Database. "Extract of Fructus Cannabis Ameliorates Learning and Memory ..." RTHC-01355. Retrieved from https://rethinkthc.com/research/chen-2017-extract-of-fructus-cannabis
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.