Quick Answer:
An interesting discovery has been made as part of research on CBD and Brain Blood Flow: one human study revealed that 600 mg of orally administered CBD caused increased blood flow in the hippocampus, which is a brain area heavily linked with memory. But this doesn’t mean that CBD has been scientifically proven to enhance memory or protect from illnesses like Alzheimer’s.
However, the data on CBD and Brain Blood Flow are not abundant enough. The initial study included just 15 healthy subjects and analyzed the short-term effects of only one relatively high dose. While the question of how CBD and Brain Blood Flow influences blood flow in the hippocampus has been further researched by other scientists, more studies need to be conducted before these findings can be applied in practice.
What Is CBD?
Cannabidiol, or CBD for short, is one of the most prominent cannabinoids found in the cannabis plant. CBD is not intoxicating like THC, but it may still influence the brain and body in different ways.
Research on CBD has gained significant attention as scientists investigate its potential effects on anxiety, pain, epilepsy, sleep, cognitive function, and brain health. One particularly interesting area is CBD and Brain Blood Flow, as researchers continue exploring how CBD may influence circulation within specific regions of the brain.
An especially intriguing part of CBD and Brain Blood Flow research involves the hippocampus, a brain region associated with learning and memory. Understanding whether changes in blood flow contribute to the effects observed after taking CBD may help researchers better understand how the cannabinoid interacts with the brain.
However, it is important to distinguish scientific evidence from marketing claims. Research on CBD and Brain Blood Flow does not mean that CBD has been proven to enhance overall health, memory, concentration, or cognitive performance.
Why Is Blood Flow Important to the Brain?
This organ needs a steady stream of oxygen and nutrients that are transported through the blood vessels.
Various regions of the brain get stimulated during various activities. There can be a change in the blood flow in reaction to neural stimulation, and this is why scientists use brain imaging methods to test how a substance influences certain brain regions.
The hippocampus region of the brain is quite fascinating due to its involvement in learning and memory formation.
This link is the reason behind the increasing interest in CBD and Brain Blood Flow studies. Scientists do not focus only on overall blood circulation but specifically on the influence of CBD on certain brain regions.
What Was Revealed by the Original CBD Study?
In 2020, a paper on CBD and Brain Blood Flow was published in the Journal of Psychopharmacology. This paper used a special technique, known as ASL (Arterial Spin Labeling).
The researchers conducted their experiment using a randomized, double-blind, crossover trial method with 15 healthy participants. Participants received 600 mg of CBD orally or placebo on different occasions, and the blood flow was recorded after approximately 3 hours.
The scientists found out that there was an increased cerebral blood flow in the hippocampus after administration of CBD. Additionally, there was memory performance testing.
This is a very exciting scientific discovery, but this paper was small in size and did not aim to find out whether CBD taken regularly can improve memory or prevent neurological diseases.
This aspect must be remembered while interpreting researches about CBD and Brain Blood Flow.
Does More Blood Flow Mean Better Memory?
Not necessarily.
It is one of the key takeaways while discussing the relationship between CBD and Brain Blood Flow.
The matter is that the connection between the amount of blood flowing through certain brain areas and brain performance is rather complex. In some diseases, the studies of the brain may be dedicated to the question of whether it is possible to find an abnormal blood flow level corresponding to changes in brain functions.
For instance, a randomized controlled trial has explored people who were in the clinical high risk of psychosis. It appeared that the participants had higher hippocampal blood flow than the control group. But after taking only one 600 mg dose of CBD, there were no differences between the experimental and placebo groups regarding the blood flow in the hippocampus. Though, exploratory analysis revealed partial normalization.
This new study brings additional perspective to the discussion – the relation between CBD and Brain Blood Flow can be different depending on the target population.
What Brain Imaging Studies Can Reveal
- Does CBD influence particular brain regions?
- Is there any difference between CBD influences on the brain in healthy and sick people?
- Is there any correlation between changes in blood flow and changes in cognitive performance?
- Is there any long-lasting effect of repeated CBD application?
- Does the dosage and the mode of application play a role?
Can CBD Improve Memory?
It is still too early to state that CBD is an established memory-improving drug.
In the mentioned 2020 study, scientists aimed at researching the connection between cerebral blood flow and memory loss, not at finding a memory improvement tool based on CBD. Moreover, the limited number of participants and the one-time administration make generalization of results problematic.
There is also the crucial distinction between the discovery of a biological effect and its beneficial impact.
Thus, the specialists might find out that certain substance influences cerebral blood flow in some way. In further researches, it will be necessary to establish whether this effect has any positive influence on memory, learning, or other aspects of health.
Consequently, CBD and Brain Blood Flow can be considered an issue of scientific interest, but not the evidence that CBD can improve memory.
Does This Research Have Anything to Do With Brain Disorders?
There is potential, however, much more evidence is needed.
The hippocampus plays a part in many disorders where there may be impaired memory or cognitive processes. It has therefore been proposed that the findings about CBD and Brain Blood Flow might suggest further study of hippocampal dysfunctions.
The original researchers indicated that conditions such as Alzheimer’s disease, post-traumatic stress disorder, and depression are those that might require further study.
This doesn’t mean, however, that CBD is an established treatment for these disorders.
According to the NCCIH, cannabis and cannabinoid research differs significantly depending on the condition. The FDA has approved a pharmaceutical version of CBD to treat certain severe seizure disorders, but it doesn’t establish CBD as an approved treatment of memory disorders.
But What about CBD, THC, and Memory?
CBD and THC are different forms of cannabinoids and may have different effects.
THC is the main psychoactive cannabinoid in cannabis, which may impact one’s attention, memory, motor skills, and perceptions.
CBD is not usually psychoactive like THC, but it still may have effects on the body and interact with other drugs.
In addition, studies have revealed that CBD may alter the effects of THC in an oral administration. As highlighted by the NCCIH, a study discovered that a combination of oral doses of high amounts of CBD and THC had more pronounced drug effects on the participants, such as harder-to-recall memory, compared to THC only.
That is yet another reason why one should be careful and not think that everything about CBD and Brain Blood Flow is true about all cannabis products.
Is CBD Safe for Everyone?
However, there are reasons why CBD cannot be deemed absolutely safe just because it does not induce intoxication.
Firstly, the FDA mentions some safety concerns linked to CBD use, such as liver damage and interaction with other drugs. In addition, some CBD products may have the different concentration of CBD compared to what is stated on the label.
Secondly, those who take prescribed medicines must consult a doctor prior to using CBD, especially if the medicine has the ability to interact with liver enzymes or affects CNS.
Thus, while CBD and Brain Blood Flow can be a good research topic, it cannot be used as an excuse to start CBD treatment regardless of one’s health condition.
What Are the Biggest Limitations of the Research?
Here are some reasons why the existing evidence should be analyzed in detail.
Limited Sample Size
The original brain imaging study included 15 healthy individuals. A sample size like this is enough to conduct a preliminary analysis, but larger trials will be needed to figure out if the results are reproducible in other subjects.
A Single Dose Experiment
Subjects were administered a single 600 mg dose. This way, researchers learned about an acute effect; however, it does not give any idea about the consequences of CBD consumption during several weeks or months.
Blood Flow ≠ Better Results
An imaging result does not imply better memory or brain health.
Other Population Groups May Have Other Results
The example of the clinical trial that targeted a high-risk group proves this.
Why Do All These Limitations Mean That CBD and Brain Blood Flow Is Emerging Research?
What Does the Research Imply for Customers?
For those interested in CBD, the take-away lesson is simply to maintain perspective on the evidence.
There is plenty of evidence to suggest that CBD may affect brain blood flow under certain conditions. The 2020 paper offers especially intriguing evidence relating to the hippocampus.
However, the implication for consumers is not that taking CBD oil, candy, capsules, or any other commercial form of CBD will enhance your memory.
CBD products can range widely in their concentration and formulation. The FDA has expressed serious concerns about the safety, labeling, quality, and effectiveness of CBD products.
To put it another way, CBD and Brain Blood Flow research is useful for learning about CBD’s biology, but does not recommend using CBD.
The Future of CBD and Brain Research
There have been further investigations into the effects of cannabinoids on the brain by scientists.
Further research may provide insight into the connection between the changes in cerebral blood flow and the changes in memory, attention, mood, or other cognitive functions.
Researches may also conduct investigations with different doses of CBD, longer duration of treatment, different groups of patients, and different neurological or psychiatric conditions.
The recent investigation with patients who were clinically high risk for psychosis is one such study that is being conducted outside of the healthy group of volunteers.
Such studies will be highly useful in the future when more will be known about CBD and its effects on the brain.
Frequently Asked Questions
Does CBD increase brain blood flow?
In one 2020 human trial, a single dose of 600 mg of CBD increased blood flow to the hippocampus. This does not mean that CBD increases blood flow to the brain in general.
Can CBD boost memory?
The current data do not show that CBD has memory-boosting properties. Some effects on hippocampal blood flow have been noted, and this cannot be considered as an indicator of memory enhancement.
Which part of the brain is affected by CBD?
The research on the topic of CBD and Brain Blood Flow reveals that some effects are associated with the hippocampus. However, there are other brain areas that were researched, and effects may depend on the experiment.
Is CBD FDA-approved for memory issues?
Not at all. The FDA approved CBD in pure form as a treatment of specific epilepsy syndromes; however, CBD was not approved as a memory booster or Alzheimer’s disease treatment.
Conclusion
CBD and Brain Blood Flow has discovered a fascinating relationship between cannabidiol and blood flow in the hippocampus. A small 2020 study showed that there was more blood flow in the hippocampus after just one 600 mg dose of CBD. This gives researchers a good starting place for more research on the topic.
An interesting research result is not the same thing as a medical benefit, though. It is not yet clear if CBD helps memory, slows down Alzheimer’s disease, or improves brain health in any way.
As things stand, CBD and Brain Blood Flow is still a developing area of cannabinoid research.
Sources & Related Research
- PubMed — CBD, Cerebral Blood Flow and Memory Study
- PMC — Full Research Paper on CBD and Hippocampal Blood Flow
- PubMed — CBD and Hippocampal Blood Flow in People at Clinical High Risk for Psychosis
- NCCIH — Cannabis, Marijuana and Cannabinoids: What You Need to Know
- FDA — What You Need to Know About CBD Products