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Quality of Life

Quality of life (QOL) refers to a general, all concompassing, response as to how tolerance and enjoyable one's living conditions are. QOL is impaired in various disease states that reduce functionality or cause pain, and treating these symptoms causes an increase in QOL.

Kamal
Research analysis lead by Kamal Patel
All content reviewed by Examine.com Team.
Published:
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Things To Know & Note

Also Known As

QOL

Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect quality of life
Grade Level of Evidence
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 mo re evidence, the more we can trust the results.
Outcome 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
grade-c Berberine Minor - See study
Minor effect in persons with cardiomyopathy, but it is unsure if berberine has a per se benefit on quality of life.
grade-c Coenzyme Q10 Minor Moderate See all 3 studies
An increase in QOL has been noted in persons who either have heart ailments or are at risk for them, but this may not be a universal increase (perhaps dependent on reducing disease state symptoms)
grade-c Oxiracetam Minor - See study
The one study to measure subjective quality of life in persons with dementia found a significant improvement with supplementation
grade-c Garlic - - See study
Quality of life in cancer patients is unaffected despite an increase in NK cell activity, thought to be indicative of a therapeutic effect of supplementation.
grade-d Saw Palmetto  

All comparative evidence is now gathered in our ​A-to-Z Supplement Reference.

The evidence for each separate supplement is still freely available ​here.