Does Dairy Cause Inflammation? Should You Go Dairy-Free? Reduce Inflammatory Foods
Does dairy cause inflammation? The answer isn’t a simple yes or no. For some people, dairy foods are well tolerated and don’t appear to increase inflammation. For others, dairy may contribute to inflammatory symptoms, depending on individual factors like gut health, immune response, and underlying conditions.
For many years, dairy was widely believed to be inflammatory. More recent research, however, suggests that dairy does not increase markers of chronic inflammation in most healthy people. In some cases, fermented or full-fat dairy products may even be associated with neutral or anti-inflammatory effects.
That said, dairy can still be problematic for certain individuals. People with lactose intolerance, a dairy allergy, or sensitivity to milk proteins may experience inflammation-related symptoms after consuming dairy, even if inflammatory markers don’t rise across the general population.
Understanding whether dairy is inflammatory for you requires looking beyond blanket dietary rules. In this article, we’ll explore what the research says about dairy and inflammation, who is more likely to react, and how to determine whether dairy belongs in your diet.
Does dairy cause inflammation?
If you have a dairy allergy, lactose intolerance, IBS, SIBO, gluten intolerance or intestinal permeability, dairy may promote an inflammatory response when consumed.
Additionally, researchers have found links between milk consumption and the occurrence of acne and eczema.
For Parsley Health members with any of these conditions, we usually recommend following a dairy-free diet. However, research does not support the notion that dairy is inflammatory for people who do not have any of these conditions.
A 2019 review, published in Advances in Nutrition, found that dairy had no pro-inflammatory effects on healthy people or people who have diabetes or metabolic syndrome.
Most recently, a 2020 review reported that eating dairy could even reduce biomarkers of inflammation in some cases where subjects did not have inflammatory disorders or other conditions.
Likewise, a 2017 review that evaluated 52 clinical studies concluded that dairy generally has some anti-inflammatory effects, except in people with known allergies or intolerances.
If you notice bloating, changes in bowel movements, or any other type of digestive upset after eating dairy, these symptoms could signal that dairy causes inflammation for you.
Dairy inflammation symptoms may include changes in your skin: You might notice an uptick in acne, eczema, or psoriasis after dairy intake. If you’re super sensitive to dairy, it may even cause fatigue or brain fog.
An elimination trial is the best way to test whether dairy is inflammatory for you. An elimination trial involves 30 days of completely eliminating dairy from your diet. Then, your provider can work with you to slowly reintroduce dairy to see if you experience a reaction.
Is dairy good for you?
You probably grew up hearing that milk is good for your bones and yogurt is good for your gut.
Indeed, milk contains calcium and vitamin D, which are good for your bones. Yogurt contains probiotics, which are good for your gut. These lines of thinking have likely led dairy to become a staple in many diets.
Despite the mass production and consumption of dairy, however, allergies and sensitivities to milk are common. In these, and other instances, dairy can be an inflammatory food.
Being lactose intolerant can cause issues when consuming dairy
Those with lactose intolerance are unable to digest dairy well because they do not produce adequate amounts of the enzyme lactase, which is required to break down lactose, a sugar found in dairy.
About 20 to 25 percent of white adults are believed to be lactase deficient.
About 75 to 90 percent of African Americans, Native Americans, and Asian Americans are estimated to have lactose intolerance.
Symptoms of lactose intolerance generally occur within 30 minutes to two hours after ingestion.
However, not all individuals with lactase deficiency experience symptoms of lactose intolerance. Symptomatic individuals represent only about 50 percent of lactase deficiency cases.
Some people with lactose intolerance do not experience symptoms with fermented dairy, like yogurt, or high-fat dairy products, like butter.
If you produce the lactase enzyme but still react poorly to dairy, you likely have a milk protein allergy, In this case, you experience an allergic response to one or both of the proteins found in dairy—casein and whey.
People can also experience dairy allergy symptoms in the GI tract, such as loose stools, diarrhea, vomiting, and abdominal cramping.
Additionally, if you have increased intestinal permeability, or “leaky gut," your immune system may respond to allergenic components in milk and dairy products.
Dairy sensitivity and celiac disease
Celiac disease and dairy sensitivity share connections. Lactose intolerance is often a symptom of celiac disease, with about quarter of celiac patients experiencing it. This is typically due to secondary lactose intolerance, caused by damage to the small intestine villi.
For many celiac patients, dairy sensitivity is temporary. As the small intestine heals on a gluten-free diet, lactose tolerance often improves.
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If you tolerate dairy well and like it, it can be part of a healthy diet. Choose high quality, full-fat, organic, pasture-raised dairy that’s preferably from grass-fed cows, goats, or sheep.
Contrary to previous understanding, full-fat dairy may be more beneficial than low-fat varieties. This is likely because of the higher sugar content in low-fat dairy products.
The dairy source is also a major factor to consider. Conventional dairy products are made from milk that contains hormones, chemicals, and antibiotics—all of which may have negative consequences to your health.
Therefore, opting for organic and pasture-raised varieties from grass-fed cows is your best bet.
Dairy products from goat and sheep may be better tolerated because they contain lower levels of milk proteins since they come from smaller animals.
Milk from goats and sheep also contain the more easily digestible A2 beta-casein, which is a big part of the reason they’re less likely to cause GI symptoms and inflammatory responses when consumed.
For an added bonus, goat and sheep are also less likely to be factory farmed. Therefore, their milk may have fewer additives resulting from their feed.
Some studies suggest that A1 milk consumption may be linked to:
inflammation
digestive discomfort
possible increased risk of heart disease and diabetes
However this research is largely inconclusive. A2 milk is often marketed as a healthier alternative to regular milk. But more research is needed to understand the differences between A1 and A2.
Takeaway
Knowing whether you have a dairy intolerance or sensitivity can help you decide if dairy is right for your diet.
Experimenting with a 30-day dairy-free diet, followed by a formal reintroduction trial, can help you assess any potential negative reactions to dairy.
You can get tested for dairy intolerances, like we do here at Parsley Health, and work with your doctor and other providers to develop the best nutrition plan for your unique needs.
Frequently Asked Questions About Dairy and Inflammation
Does dairy cause inflammation in everyone?
No. Research suggests that dairy does not cause chronic inflammation in most healthy people. However, some individuals may experience inflammatory symptoms due to lactose intolerance, dairy allergy, or sensitivity to certain milk proteins.
Is dairy inflammatory if you have arthritis or autoimmune disease?
It depends on the individual. Some people with inflammatory or autoimmune conditions report symptom flares after consuming dairy, while others tolerate it without issue. There’s no universal rule, which is why a personalized approach matters.
Can dairy cause inflammation even if you’re not lactose intolerant?
Yes. While lactose intolerance is a common reason for dairy-related symptoms, some people react to milk proteins such as casein or whey. These reactions may trigger digestive discomfort, skin issues, or inflammation-like symptoms.
Is milk more inflammatory than other dairy products?
Not necessarily. Fermented dairy products like yogurt and kefir are often better tolerated than milk, especially for people with lactose sensitivity. Fermentation reduces lactose content and may support gut health in some individuals.
Is cheese inflammatory?
Cheese is not inherently inflammatory, but tolerance varies. Aged or fermented cheeses may be easier to digest for some people, while others may notice symptoms depending on portion size, fat content, or individual sensitivity.
Can dairy increase inflammation markers in blood tests?
Most studies show that dairy does not raise inflammatory markers such as C-reactive protein (CRP) in the general population. However, individual responses can vary, particularly in people with underlying digestive or immune conditions.
How can I tell if dairy is causing inflammation for me?
Keeping a symptom journal or doing a short, supervised elimination and reintroduction of dairy can help identify patterns. Working with a clinician can help ensure this is done safely and interpreted accurately.
Is dairy considered an inflammatory food?
Dairy is not universally considered inflammatory. Whether it contributes to inflammation depends on factors like gut health, genetics, immune response, and the type of dairy consumed.
Should I avoid dairy to reduce inflammation?
Not necessarily. Eliminating dairy isn’t required for most people and may not improve inflammation. A more effective approach is identifying whether you personally react to dairy and choosing types and amounts that support your health.
What’s the difference between dairy intolerance, allergy, and sensitivity?
Dairy allergy is an immune reaction to milk proteins and can be more serious.
Dairy sensitivity is less clearly defined and may involve inflammation-like symptoms without a true allergy.
Understanding the difference can help guide dietary choices.
Editorial Standards
At Parsley Health, we believe better health starts with trusted information. Our content is accurate, accessible, and compassionate—rooted in evidence-based research and reviewed by qualified medical professionals. For more details read about our editorial process.
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