- A study has reported results showing that MCT oil intake has a positive effect on cognitive performance.
- The evidence score is 39, and the reliability of this information is limited.
- This may be relevant information for healthy older adults.
MCT oil is an oil whose main component is medium-chain fatty acids.
It is positioned as one category of lipid, and is generally consumed as an energy source.
It has been shown that taking MCT oil may improve cognitive performance (performance on tasks requiring mental effort). In other words, this is a report related to the ability to think about and judge things. This study states that a change was observed following a single intake (taking it just once).
Specifically, the investigation looked at performance related to information processing speed and accuracy, among other factors. A study has reported that MCT oil has a positive effect on cognitive performance. This result suggests the possibility of supporting brain function under specific conditions.
This content is based on a study conducted under the title "An fMRI Investigation into the Effects of Ketogenic Medium-Chain Triglycerides on Cognitive Function in Elderly Adults: A Pilot Study." This investigation used the RCT (randomized controlled trial: a reliable research method in which participants are divided into groups to compare effects) method. In other words, this is a format designed to carefully confirm whether the effect is due to the ingredient rather than chance.
This investigation was a small-scale study involving 20 healthy older adult participants. The experiment looked in detail at the effect of taking MCT oil (medium-chain fatty acids associated with a ketogenic diet) just once. Because the number of participants is limited, caution is needed before concluding from this result alone that the phenomenon is common to everyone.
The evidence score is 39, and reliability is considered low. This means that, since there is still only 1 study, a conclusion has not yet been firmly established. Technically, this is called a pilot study (a small-scale trial conducted as a preliminary step before a full-scale, large study), and it can be said to be at a stage awaiting further verification.
This study also touches on differences by brain region. Specifically, it focused on the dorsolateral prefrontal cortex (DLPFC: a brain region that governs executive functions such as decision-making and attention). In this region, there was a tendency for people with reduced gray matter volume (an indicator of the volume of the area where nerve cells are concentrated) to show differences in test performance. In other words, the effect felt may differ depending on an individual's brain condition.
| Study | Design | Number of participants | Duration | Main result |
|---|---|---|---|---|
| Nutrients (2021, PMID:34206642) | Randomized controlled trial (RCT) | 20 | Unknown | A positive effect was reported |
This study was conducted on 20 healthy older adults.
Since the subjects were healthy older adults, this can serve as one point of reference if your own age group is close to that of the participants.
This study is based on a single randomized controlled trial (RCT).
Because the number of study participants is small, at 20, reliability is considered limited.
In addition, this investigated the effect of a single intake, and does not show the effect of continuous intake.
What effect has MCT oil been reported to potentially have on cognitive performance?
A study has reported a positive effect on cognitive performance.
This effect was shown in performance on the N-back task.
How reliable is this research on MCT oil?
This study is based on a single report. Therefore, reliability is considered limited.
How was MCT oil taken in this research?
In this study, it was administered as a single intake.
This investigated the effect of a single instance of intake.
There is a report that MCT oil may have a positive effect on cognitive performance. On the other hand, caution is needed regarding the fact that there is only 1 study and reliability is limited. This result is based on a small-scale study involving 20 participants. When incorporating this into your own life, please keep the limitations of this information in mind.
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