The Human Effect Matrix looks at human studies to tell you what supplements affect Lower Respiratory Tract Infection Risk.
Full details on all Lower Respiratory Tract Infection Risk supplements are available to Examine members.
| 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 |
|---|---|---|---|---|
|
|
- | Very High See all 4 studies |
Studies have not found a lower rate of lower respiratory tract infections. However, it's possible that those with low vitamin D levels could see some benefit. More evidence is needed.
|
