Probably not, based on short trials. When healthy adults ate butter instead of olive oil for 5 weeks, CRP, a blood marker of inflammation, did not change. Other trials found butter had no clear effect on inflammation markers. Butter's clearer downside was cholesterol: it raised LDL more than olive oil or coconut oil.
Is butter inflammatory to the body?
Butter is mostly saturated fat, and saturated fat gets blamed for a lot. The fair test is simple. Give people butter, give them another fat, and check their blood.
In a 2015 double-blind crossover trial, 47 healthy adults replaced part of their usual diet with butter for 5 weeks and with refined olive oil for 5 weeks. The team measured hsCRP, a sensitive test for C-reactive protein, which the body makes more of when inflammation is up. Butter and olive oil showed no difference.
A 2023 trial ran longer. Over 3 months, 60 women living in a care home took turns eating breakfasts rich in butter, olive oil or margarine. The researchers checked a long list of markers, including CRP and IL-6, a signal protein the immune system uses. The butter breakfast had no apparent effect on them.
A 2024 crossover trial in 30 healthy adults compared 4 weeks of low-fat yogurt plus 10 to 15 g of butter a day with 4 weeks of full-fat yogurt. Inflammation markers did not differ between the two.
Three trials, three different setups. None caught butter raising inflammation markers.
What happens in the hours after a buttery meal?
A high-fat meal can set off a short inflammatory response. If that happens again and again, it may add to the low-level kind linked to heart and metabolic disease.
Butter and olive oil showed no difference in CRP.From a 2015 randomized trial in Am J Clin Nutr
In a 2026 double-blind trial, 18 healthy adults ate the same 706-calorie meal four times, with 40 g of fat from butter, coconut oil, flaxseed oil or corn oil. Across all the meals, 21 of 93 blood proteins changed over the next 6 hours. But the fat source mattered little. One marker, GlycA, rose more after the corn and flaxseed oil meals than after butter, and no steady pattern favored any one fat.
A 2012 trial gave 13 overweight adults breakfasts with 45 g of fat from butter, cream, yogurt or cheese. None raised eight blood markers tied to inflammation or clogged arteries.
One flag: in a 2020 crossover trial of 47 healthy adults, butter and whipped cream meals made inflammation-related genes in immune cells more active, while cheese and sour cream made them less active. Gene activity is an early signal. It is not the same as a rise in CRP.
Is olive oil better than butter for inflammation?
Maybe, by a little. In the breakfast trial, the olive oil breakfast lowered IL-6, and the butter breakfast did not. A 2022 meta-analysis, which pools many studies into one larger answer, looked at 31 randomized trials with 1,634 adults. Eating more oleic acid, the main fat type in olive oil, lowered CRP by a small amount. It did not change IL-6 or TNF, another inflammation signal.
Still, in the one head-to-head trial that tracked CRP for weeks, butter and olive oil came out the same. If olive oil has an edge, it is a small one.
What about seed oils, the other common swap? A 2017 meta-analysis of 30 randomized trials with 1,377 people found that eating more linoleic acid, an omega-6 fat, did not change blood inflammation markers, though very large increases might nudge CRP up.
Does butter cause inflammation like milk?
Many people have heard that dairy is inflammatory. The trials don't back that up. A 2019 review of 16 randomized trials found that milk and dairy did not show a proinflammatory effect in healthy people or in people with metabolic problems. A 2020 meta-analysis of 11 trials with 663 adults found dairy might lower CRP, IL-6 and TNF-alpha a little, but the effect disappeared in the crossover trials. Neither review tested butter on its own, and the 2020 authors asked for more research on the fat in dairy.
Where butter does stand out: cholesterol
If inflammation markers hardly budge, why do health advisers still say go easy? Cholesterol.
In a 2018 trial, 96 adults aged 50 to 75 were randomly assigned to eat 50 g a day of butter, coconut oil or olive oil for 4 weeks. Butter raised LDL cholesterol, a known risk factor for heart disease, by 0.42 mmol/L more than coconut oil and 0.38 mmol/L more than olive oil. The 2015 trial found the same thing: butter raised LDL more than olive oil. Its authors concluded that people with high cholesterol should keep butter to a minimum, while moderate amounts may fit for people with normal cholesterol.
What this means for you
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The bottom line
The butter trials asked a fair question and kept getting the same quiet answer. CRP held still against olive oil. A care-home breakfast left the markers alone. Six hours of blood draws after a buttery meal looked much like the seed oil meals, and the one place butter kept standing out was the cholesterol line. As far as short trials can tell, butter is not an inflammation food. Your LDL is the reason to keep it small. Spread it thin, and cook with olive oil most days.
Common questions
Does butter cause inflammation in the body?
Not in the trials so far. In a 5-week crossover trial of 47 healthy adults, butter and olive oil had the same effect on hsCRP. In a 3-month trial of 60 women, a butter-rich breakfast had no apparent effect on inflammation markers. These trials were short and small, so they can't rule out effects over many years.
Is butter inflammatory or anti-inflammatory?
Neither, as far as current trials show. Butter did not raise inflammation markers compared with olive oil or yogurt. It did not lower them either: in a 3-month breakfast trial, olive oil lowered IL-6 while butter had no apparent effect.
Does butter cause inflammation like milk?
Trials don't show milk causing inflammation either. A 2019 review of 16 randomized trials found milk and dairy did not show a proinflammatory effect. A 2020 meta-analysis of 11 trials found dairy might lower CRP a little, but not in crossover trials. And in a 2012 trial, single meals with 45 g of fat from butter or cream did not raise eight inflammation-related markers.
Does a high-fat meal cause inflammation?
For a few hours, it can shift things. In a 2026 trial of 18 healthy adults, 21 of 93 blood proteins changed after a meal with 40 g of fat. But the fat source made little difference: butter, coconut, corn and flaxseed oil showed no steady pattern. In a 2012 trial, most values were back to baseline by 6 hours.
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How this article was made
Researched and written from 11 peer-reviewed papers. Our automated check matched every claim against the exact words of its source, confirmed every paper exists in PubMed, and found none retracted. Checked November 1, 2026. Not individually reviewed by a doctor. Photos are illustrative; the people in them are not patients or readers.
Grades run Strong, Moderate, Emerging, Early and Not supported, and the grade decides the words we may use. How we grade evidence · Medical disclaimer
Sources
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- Randomized trialModification of Breakfast Fat Composition Can Modulate Cytokine and Other Inflammatory Mediators in Women: A Randomized Crossover Trial.Delgado-Alarcón JM, Hernández Morante JJ, Morillas-Ruiz JM Nutrients, 2023.PubMedFull paper
- Randomized trialEffect of different sources of saturated and polyunsaturated fatty acids on postprandial inflammation: A double-blind randomized crossover trial.Limani N, Henriksen HB, Minge MM et al. Clin Nutr ESPEN, 2026.PubMedFull paper
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- Randomized trialCirculating inflammatory and atherogenic biomarkers are not increased following single meals of dairy foods.Nestel PJ, Pally S, MacIntosh GL et al. Eur J Clin Nutr, 2012.PubMedFull paper
- Randomized trialIntake of Fermented Dairy Products Induces a Less Pro-Inflammatory Postprandial Peripheral Blood Mononuclear Cell Gene Expression Response than Non-Fermented Dairy Products: A Randomized Controlled Cross-Over Trial.Rundblad A, Holven KB, Øyri LKL et al. Mol Nutr Food Res, 2020.PubMedFull paper
- Randomized trialRandomised trial of coconut oil, olive oil or butter on blood lipids and other cardiovascular risk factors in healthy men and women.Khaw KT, Sharp SJ, Finikarides L et al. BMJ Open, 2018.PubMedFull paper
- Meta-analysisDietary oleic acid supplementation and blood inflammatory markers: a systematic review and meta-analysis of randomized controlled trials.Wang Q, Liu R, Chang M et al. Crit Rev Food Sci Nutr, 2022.PubMedFull paper
- Meta-analysisDietary linoleic acid intake and blood inflammatory markers: a systematic review and meta-analysis of randomized controlled trials.Su H, Liu R, Chang M et al. Food Funct, 2017.PubMedFull paper
- Meta-analysisEffects of dairy products consumption on inflammatory biomarkers among adults: A systematic review and meta-analysis of randomized controlled trials.Moosavian SP, Rahimlou M, Saneei P et al. Nutr Metab Cardiovasc Dis, 2020.PubMedFull paper
- Systematic reviewMilk and Dairy Product Consumption and Inflammatory Biomarkers: An Updated Systematic Review of Randomized Clinical Trials.Ulven SM, Holven KB, Gil A et al. Adv Nutr, 2019.PubMedFull paper
