
Blue cheese is a popular variety of cheese known for its pungent flavour and distinctive blue veins. While it is a favourite for many, some people experience discomfort and excessive gas after consuming it. This can be attributed to various factors, including lactose intolerance, mould allergies, or food poisoning. Lactose intolerance, a common condition, causes difficulty in digesting lactose, a sugar found in dairy products, resulting in increased gas. Additionally, blue cheese contains mould, and some individuals may experience an allergic reaction to this mould, leading to digestive issues. Furthermore, food poisoning from improperly stored or contaminated blue cheese can also induce symptoms such as nausea, vomiting, and diarrhoea. Understanding the potential causes of gas from blue cheese consumption can help individuals make informed decisions about their dietary choices and address any underlying conditions effectively.
Why does blue cheese give me gas?
| Characteristics | Values |
|---|---|
| Allergies | Some people are allergic to the mold in blue cheese, which can cause digestive issues. |
| Lactose Intolerance | Blue cheese contains lactose, a sugar in milk and dairy products. People with lactose intolerance may have difficulty digesting it, leading to increased gas. |
| Food Poisoning | In some cases, blue cheese may be associated with food poisoning, causing symptoms such as diarrhea, nausea, and vomiting. |
| High-Fibre Content | Blue cheese contains fiber, which can be challenging for the body to digest fully, potentially contributing to gas. |
| Sulphur Content | Blue cheese may contain traces of sulphur, which can be broken down by gut bacteria, enhancing the odor of gas. |
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What You'll Learn

Blue cheese contains milk and mould, which are common allergens
Blue cheese is made from milk curds and contains mould cultures, both of which are common allergens. An allergy occurs when a foreign substance, known as an antigen, enters the body and triggers an immune system response. The immune system identifies the antigen as a threat and attacks it. This response can manifest as sneezing, vomiting, swelling, or other symptoms.
In the case of blue cheese, the milk and mould it contains can be allergens for some people. Milk contains lactose, a sugar that some people cannot digest due to lactose intolerance. This intolerance can lead to increased gas, among other symptoms. Mould allergies are also common, often caused by airborne spores, and can result in similar symptoms as well as anaphylaxis in severe cases.
The mould in blue cheese, such as Geotrichum and Penicillium, can cause adverse reactions in some individuals. These mould strains are necessary for the cheesemaking process, contributing to the flavour and texture development. However, they can trigger allergic responses, particularly in those with mould allergies.
If you experience gas or other adverse reactions after consuming blue cheese, it is advisable to consult a doctor or a registered dietitian nutritionist (RDN). They can help determine if you have an allergy or intolerance to milk, mould, or another substance in blue cheese.
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Food intolerances can cause gas
Food intolerances are a common cause of gas. This occurs when the body is unable to properly digest certain foods, leading to discomfort and other unpleasant symptoms. For example, lactose intolerance arises from a deficiency in the enzyme lactase, which is responsible for breaking down lactose, a sugar found in dairy products. As a result, those with lactose intolerance may experience increased gas, bloating, and digestive issues after consuming dairy.
Similarly, some individuals may have difficulty digesting specific types of carbohydrates, such as raffinose, found in beans, lentils, and whole grains, or fructose, a natural sugar present in fruits like apples, mangoes, and pears. These non-digestible carbohydrates pass through the digestive system and are fermented by gut bacteria, leading to the production of gas.
Another common food intolerance is gluten intolerance, where the body struggles to break down gluten proteins found in wheat and certain grains. This can lead to gas, bloating, and other gastrointestinal symptoms.
In the case of blue cheese, some people may experience gas and other adverse reactions due to an intolerance or allergy to specific components of the cheese. Blue cheese contains two highly allergenic substances: milk and mold. An allergy to the mold in blue cheese can trigger digestive issues, including vomiting, diarrhea, and an upset stomach. These reactions are caused by the body's immune response to the allergens, resulting in inflammation and discomfort.
It is important to note that food intolerances and allergies vary among individuals, and the severity of symptoms can differ as well. If you suspect a food intolerance or allergy, it is advisable to consult a healthcare professional or a registered dietitian nutritionist (RDN) for proper diagnosis and guidance on managing your diet.
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Gas is caused by swallowing air and the breakdown of food in the digestive tract
Gas is a common occurrence after eating, and it is usually the body's natural response to certain triggers. It is caused by swallowing air and the breakdown of food in the digestive tract. On average, most people pass gas at least 14 times per day, and some people have more gas than others.
Swallowing air while chewing gum, for example, can lead to excess gas. Additionally, the breakdown of food in the digestive tract can produce gas. High-fibre foods, certain types of carbohydrates, and foods containing lactose and fructose can contribute to increased gas production. Blue cheese, in particular, can be problematic for some individuals due to its lactose content and the presence of mould, which some people may be allergic to.
Mould allergies are typically associated with inhaled spores, causing symptoms like sniffles and sneezes. However, ingesting mould can lead to gastrointestinal issues and inflammation in other parts of the body. Blue cheese contains Penicillium and Geotrichum mould strains, which are generally considered safe for human consumption. Still, they can trigger allergic reactions in some individuals, resulting in digestive issues, vomiting, diarrhoea, and an upset stomach.
Food intolerances, such as lactose intolerance or gluten intolerance, can also lead to gas and bloating. Changing your diet can help manage gas and bloating issues, but it is important to consult a doctor or a registered dietitian nutritionist (RDN) before eliminating potentially nutritious foods.
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Some people are allergic to the mould in blue cheese
Blue cheese contains two highly allergenic substances: milk and mould. Mould is responsible for the speckles within blue cheese and its characteristic saltiness and sharpness. The mould in blue cheese is caused by the cultivation of Penicillium roqueforti and Penicillium glaucum during the oxygenation of the cheese. Penicillium is a common allergen, and it is one of the good types of mould that humans can generally eat. However, some people are allergic to it, and it can cause a whole slew of problems for them.
When a foreign substance enters your body, it's called an antigen, which triggers an immune system response. Your immune system doesn't like anything that doesn't belong in the body, so it will instantly attack what it considers a threat. In some cases, your body will trigger allergic responses. The antigens that trigger these responses are called allergens. When your body first encounters an allergen, it will make antibodies that seek out only that kind of foreign substance. If a match is found, the antibodies, attached to cells, will release a chemical, and that will cause you to sneeze, vomit, or swell up.
If you have a mould allergy, eating blue cheese can trigger common mould allergic reaction symptoms. Mould allergies commonly arise from airborne spores during the spring, summer, and fall months. Ingested mould can cause inflammation in the gastrointestinal system and the skin. An extreme allergic reaction can cause excessive inflammation that can affect your respiratory and cardiovascular systems, leading to a state of shock. Anaphylaxis occurs when your entire body reacts to the allergen and can cause the inability to breathe, dizziness, an increased heart rate, and a sudden drop in blood pressure. This condition can be life-threatening and requires immediate emergency medical attention.
If you are unsure about mould allergies, it is recommended to check with a doctor, as they can easily run tests and tell you what to avoid.
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Blue cheese may be past its prime and have bad mould
Blue cheese is made with mould cultures, such as Geotrichum and Penicillium, which are necessary for cheesemaking. However, these good types of mould can still cause adverse reactions in some people. Blue cheese may be past its prime and have bad mould, which can cause digestive issues.
Mould allergies are common, and the symptoms can range from mild to severe. Inhalation of mould spores can cause inflammation in the eyes, throat, and sinuses, while ingestion can lead to gastrointestinal issues and skin problems. If you have a mould allergy, it is best to avoid blue cheese and other aged cheeses.
Some people may experience an allergic reaction to the mould in blue cheese, resulting in vomiting, diarrhoea, and an upset stomach. This reaction is caused by the body's immune system, which identifies the mould proteins as dangerous and attacks them with IgE antibodies, leading to inflammation.
Additionally, blue cheese contains lactose, a sugar found in dairy products. People who are lactose intolerant may experience increased gas as their bodies struggle to digest lactose properly. However, lactose intolerance is less common than fructose intolerance, which can also cause gas.
If you suspect an allergy or intolerance, it is advisable to consult a doctor or a registered dietitian nutritionist (RDN) before eliminating any food groups from your diet. They may recommend allergy testing or suggest trying non-dairy replacements to alleviate symptoms.
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Frequently asked questions
Blue cheese contains two highly allergenic substances: milk and mould. If you are lactose intolerant, you may experience gas after consuming blue cheese. Alternatively, you may have an allergy to the mould in blue cheese, which can also cause digestive issues.
Common symptoms of a mould allergy include vomiting, diarrhoea, upset stomach, swelling, and the closing of the throat. If you have a mould allergy, it is recommended that you abstain from aged cheeses, such as blue cheese.
There are many other causes of gas, including beans, lentils, cruciferous vegetables, ultra-processed foods, and fizzy drinks. Beans and lentils contain raffinose, a complex sugar that is not easily processed by the body. Cruciferous vegetables, such as broccoli and cabbage, are high in fibre, which can be difficult for the body to digest.
If you are experiencing excessive gas, you can try to identify and eliminate trigger foods from your diet. Staying hydrated can also help reduce the risk of constipation, which is a common cause of gas. If you are concerned about your gas, it is recommended that you consult a doctor or registered dietitian nutritionist (RDN).




















