How to Meditate for Lower Inflammation: The Dose the Trials Used

Does meditation reduce inflammation?

In 2019, researchers split 413 healthy adults three ways: 8 weeks of aerobic exercise training, a matched 8-week mindfulness course, or a wait list.6 Blood was drawn before, right after, and 17 weeks later.6 CRP is a protein the liver makes when there is inflammation anywhere in the body. In the meditators, it had not budged when the course ended. Then, 17 weeks after the course, it was lower.6 How much people practiced did not predict the change.6

That trial is the whole story in miniature. Something moves. It moves late, and less than the headlines say.

The pooled picture agrees. A 2022 meta-analysis gathered 48 randomized trials with 4,683 people and found small drops in CRP and in IL-6, a signal protein immune cells use to turn inflammation up.1 The CRP drop was bigger at follow-up than right after the programs ended.1 A 2023 network meta-analysis of 104 randomized trials with 7,820 people found mindfulness programs lowered pro-inflammatory markers and raised anti-inflammatory ones, and graded that evidence moderate.4 A 2025 review of 89 studies found lower IL-6, CRP and TNF-alpha in the randomized trials.2

Now the counterweight. A preregistered 2023 review used only randomized trial data, 32 studies and 2,880 people, and found an effect that was small and just short of statistical significance, with low study quality and signs of publication bias.3 An earlier systematic review called the field tentative.5

The dose that was tested

Almost every trial used a course, measured in weeks, with a teacher. The standard one is Mindfulness-Based Stress Reduction, or MBSR, which runs 8 weeks.678 Breast cancer survivors got a 6-week version, and depressed college students got 8 weeks of a cousin called mindfulness-based cognitive therapy, or MBCT.1314 Shorter programs ran on a phone: a 2-week app course in one trial, a 30-day app course in another.712 At the intense end sit the retreats. Three days, residential, with an active comparison group doing relaxation training.910 The longest were 3-month training modules.11

Across 48 randomized trials, mindfulness programs lowered CRP and IL-6 by a small amount, and the CRP drop was larger months later than right after the course.From a 2022 meta-analysis in Clin Psychol Rev

What about minutes a day? These trial reports give the length of the program, not a daily number. The one trial that tracked practice amount found it did not predict changes in blood markers.6 Practice did matter for mood: in the depression trial, daily practice time tracked with bigger drops in depression, anxiety and poor sleep, and people who finished the course improved more than people who attended part of it.14 The dose that counts is a finished course.

Who moved and who didn't

Two trials from one lab tested a 2-week app course and a standard 8-week MBSR course in stressed adults. Neither cut CRP.7 But a look across both samples suggested the courses may lower CRP in midlife-to-older adults and in people with a high body mass index.7

A 2019 trial of 298 healthy adults ran three 3-month training modules and found no overall effect on IL-6 or hs-CRP.11 After the attention-based module, though, people who started with a higher inflammatory load showed a stronger IL-6 drop.11 The authors called it a floor effect: healthy, low-stress adults have little to lower.11

In 190 lonely adults aged 65 to 85, 8 weeks of MBSR did nothing to blood IL-6 or CRP compared with a matched health program.8 It did quiet NF-kB, a switch inside immune cells that turns inflammation genes on.8 A 30-day app course did the same in stressed customer service workers, even though their stress fell no more than a comparison group's did.12 One honest reading: meditation changes how immune cells behave first. Whether that ever shows up in a CRP test depends on how much there was to lower.

The retreats are the surprise. In 35 stressed, unemployed adults, a 3-day residential meditation retreat beat relaxation training on IL-6 at a 4-month follow-up.9 In 95 healthy adults aged 18 to 67, a 3-day retreat lowered IL-6 and IL-8 in saliva and raised calming IL-10, while stress and anxiety scores fell.10 Saliva is not blood, though, and 3 days is a lot.

How to tell if it's working

Do not judge the course by a blood test at week 8. The largest trials saw nothing in blood at that point.68 Judge it first by what the trials saw move: perceived stress and anxiety fell after a retreat10, and depression, anxiety and sleep scores were checked at week 4 and week 8 in the MBCT trial.14 If you want a number, test hs-CRP before you start, then again about 4 months later. That is when the 413-person trial saw CRP fall and when the retreat trial saw IL-6 fall.69 Expect more if you started high, or heavier, or older.711

Who should skip it

Skip it as an inflammation strategy if you are healthy and low-stress. The 298-person trial found a floor effect: little to lower, so little moved.11 It is still a fine habit for stress.

Keep taking any medicine as prescribed. No trial here tested meditation as a replacement for treatment. If you live with depression, an anxiety disorder or trauma, do the course with a provider in the loop; the depression trial ran inside a clinical study.14 And the retreats were residential, 3 days, with a comparison arm.910 They are not a first step.