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Natural Killer Cell Content

Natural killer cells can have their population increased by nutritional supplements, which usually (but not always) results in an increase in activity.

Research analysis led by .
Reviewed by
Examine.com Team
Last Updated:

Introducing Evidence-based Keto: Your no-hype guide to the ketogenic diet

We've spent the past year analyzing the research on the keto diet, and have just released Evidence-based Keto.

Clocking in at over 200 pages with 500+ references, it's the unbiased guide you need to the ketogenic diet.

Things To Know & Note

Also Known As

NK cell, natural killer cell

ON SALE THIS WEEK: Evidence-based Keto

Unbiased truth on keto and long-term effects on health, safety, pre-existing conditions, losing weight, and more.

Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect natural killer cell content
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 more 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-b - High See all 3 studies
Although one increase in NK cell content has been noted after exercise, the two studies using similar doses at rest have failed to find a significant influence on NK cell content
grade-c Minor - See study
An increase has been noted, but there is insufficient evidence to assess the magnitude of increase or the reliability
grade-c Minor Very High See 2 studies
There is an increase in NK cell levels seen in both healthy controls as well as cancer patients, and this is thought to be due in part to both immunostimulatory and anti-immunosuppressive effects.

To view this information, please see the ​Examine.com membership.

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

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Everything you need to know about the keto diet

When we asked our users what they wanted us to cover, many of them mentioned the keto diet.

So we listened. We spent the year looking up the research on the ketogenic diet to help guide you in your journey.

With Evidence-based Keto, Examine.com gives you all the scientific research, but in understandable language with tons of informative infographics. No opinion, no bias, no conflict of interest.

If you’re interested in keto, this is a must-have unbiased source.