The Inflammation Evidence Scorecard

Every inflammation claim we have checked, graded from Strong to Not supported, with the studies behind each grade. Updated as new research lands.

Every row links to a full article with its sources on PubMed. Grades follow our evidence rules. Free to cite under CC BY 4.0: please link back to this page. Download the data (CSV).

Claim	Grade	Why
Lack of sleep causes inflammation	Evidence: Moderate	Lab studies, a 72-study review and treatment trials point the same way, but the effects are small and the key lab result rests on 5 studies per marker.
Exercise lowers chronic inflammation	Evidence: Moderate	Many trials point the same way, and the strength training trials agree. But the biggest review rated about 7 in 10 results low or very low certainty.
GLP-1 drugs are anti-inflammatory beyond weight loss	Evidence: Moderate	The CRP drop shows up again and again in trials and the heart benefit comes from a large trial, but no one can yet say how much of that benefit runs through inflammation, and the brain trial was negative.
A home CRP test reveals your inflammation level	Evidence: Moderate	The link between hs-CRP and heart risk is strong, but how much one test adds for one person is debated, guidelines disagree, and little evidence shows that lowering CRP itself heads off heart disease.
The DASH diet helps rheumatoid arthritis	Evidence: Emerging	This is one small trial in which only 49 of 82 people finished, and other diet studies in rheumatoid arthritis point the same way but are rated low or very low quality.
Eating more fiber lowers inflammation	Evidence: Emerging	Many fiber trials lean helpful, but changes in inflammation markers are small and inconsistent, and the largest summary found no clear drop in CRP.
Seed oils cause inflammation	Evidence: Not supported	Trials that raised omega-6 intake found no clear rise in inflammation markers, and people with more linoleic acid in their blood had lower CRP, not higher.
Cold plunges reduce inflammation	Evidence: Not supported	Reviews found no clear effect of cold water on CRP or IL-6 and no steady benefit for inflammation; easing sore muscles is the one fairly steady win, and even that rests on low-quality reviews.

Claim

Grade

Why

Lack of sleep causes inflammation

Evidence: Moderate

Lab studies, a 72-study review and treatment trials point the same way, but the effects are small and the key lab result rests on 5 studies per marker.

Exercise lowers chronic inflammation

Evidence: Moderate

Many trials point the same way, and the strength training trials agree. But the biggest review rated about 7 in 10 results low or very low certainty.

GLP-1 drugs are anti-inflammatory beyond weight loss

Evidence: Moderate

The CRP drop shows up again and again in trials and the heart benefit comes from a large trial, but no one can yet say how much of that benefit runs through inflammation, and the brain trial was negative.

A home CRP test reveals your inflammation level

Evidence: Moderate

The link between hs-CRP and heart risk is strong, but how much one test adds for one person is debated, guidelines disagree, and little evidence shows that lowering CRP itself heads off heart disease.

The DASH diet helps rheumatoid arthritis

Evidence: Emerging

This is one small trial in which only 49 of 82 people finished, and other diet studies in rheumatoid arthritis point the same way but are rated low or very low quality.

Eating more fiber lowers inflammation

Evidence: Emerging

Many fiber trials lean helpful, but changes in inflammation markers are small and inconsistent, and the largest summary found no clear drop in CRP.

Seed oils cause inflammation

Evidence: Not supported

Trials that raised omega-6 intake found no clear rise in inflammation markers, and people with more linoleic acid in their blood had lower CRP, not higher.

Cold plunges reduce inflammation

Evidence: Not supported

Reviews found no clear effect of cold water on CRP or IL-6 and no steady benefit for inflammation; easing sore muscles is the one fairly steady win, and even that rests on low-quality reviews.