Easily stay on top of the latest nutrition research
Become an Examine Member to get access to the latest research. Get 150+ studies summarized for you across 25 different categories every month.
Members also have access to the Examine Study Database of 400+ supplements and their effects on 600+ health outcomes, as well as in-depth research analyses. Understand the whole body of nutrition and supplement evidence at a glance.
Get instant access — start your free 14-day trialAlready a Member? Click here to log in.
The Human Effect Matrix looks at human studies to tell you what supplements affect Alpha-Diversity.
Unlock the full Study Database with an Examine Membership. Get a 14-day free trial.
| Grade | Level of Evidence [show legend] |
|---|---|
|
Robust research conducted with repeated double-blind clinical trials |
|
Multiple studies where at least two are double-blind and placebo controlled |
|
Single double-blind study or multiple cohort studies |
|
Uncontrolled or observational studies only |
|
Level of Evidence
?
The amount of high quality evidence. The more
evidence, the more we can trust the results.
|
Supplement |
Magnitude of effect
?
The direction and size of the supplement's impact on
each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
|
Consistency of research results
?
Scientific research does not always agree. HIGH or
VERY HIGH means that most of the scientific research agrees.
|
Notes |
|---|---|---|---|---|
|
|
 
Minor
|
- See all 5 studies |
Markers of alpha-diversity have remain unchanged or increased after a low-FODMAP diet. The clinical relevance of this change is unknown.
|
|
|
|
Minor
|
Moderate See 2 studies |
Limited evidence shows that the SCD, mSCD, whole-foods based diets, and Mediterranean dietary patterns may lead to elevations, reductions, or no change in alpha-diversity.
|
