
Incense has been used for thousands of years for its many benefits, including its calming fragrance. However, recent studies have found that burning incense releases toxic chemicals, which can be harmful to human health. The smoke emitted from incense contains particulate matter, gas products, and organic compounds, which can cause air pollution and respiratory issues. Burning incense has also been linked to an increased risk of cancer, asthma, and other health problems. In addition to the health risks, burning incense can also cause damage to surfaces, such as wood, and may result in fires if not used properly. While the exact health dangers of incense are still being investigated, it is recommended that people reduce their exposure to incense smoke and take precautions when burning incense to minimize potential risks.
| Characteristics | Values |
|---|---|
| Health impact | Burning incense has been linked to respiratory diseases, such as asthma, and an increased risk of certain cancers. It may also cause intellectual decline, accelerated cognitive ageing, and an increased risk of Alzheimer's Disease and vascular dementia. |
| Fire risk | Incense should not be burned on or near flammable surfaces, such as wood or fabric, as it may result in a fire. |
| Surface damage | Incense ash can cause discolouration and damage to surfaces such as wood, furniture, or floors. |
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What You'll Learn
- Incense smoke contains carcinogens and irritants, which can lead to respiratory diseases
- Burning incense increases levels of chemicals called polycyclic aromatic hydrocarbons (PAHs), which are linked to cancer
- Incense smoke contains toxic chemicals that can cause intellectual decline, cognitive aging, and an increased risk of Alzheimer's Disease
- Burning incense indoors can facilitate the transmission of viruses, such as SARS-CoV-2, by releasing coarse and fine particles into the air
- Incense ash can cause damage to surfaces such as wood, furniture, or floors

Incense smoke contains carcinogens and irritants, which can lead to respiratory diseases
Incense has been used for thousands of years, and many have experienced its benefits. However, recent studies have suggested that burning incense can pose health dangers. While incense is not officially deemed a major public health risk, it is important to be cautious about the potential hazards it may present.
The smoke emitted from burning incense contains particulate matter, including small, inhalable particles, as well as gas products and organic compounds. On average, incense burning produces more particulate matter than cigarette smoking, with incense producing over 45 mg/g burned compared to 10 mg/g burned for cigarettes. The gas products from burning incense include CO, CO2, NO2, and SO2, among others.
The organic compounds released by burning incense include volatile organic compounds (VOCs) such as benzene, formaldehyde, toluene, and xylenes, as well as aldehydes and polycyclic aromatic hydrocarbons (PAHs). These compounds are associated with a host of health problems. A study published in The International Journal of Environmental Research and Public Health found that burning incense indoors resulted in levels of benzene, formaldehyde, and other VOCs that exceeded the limits recommended by the World Health Organization (WHO).
In addition to the release of VOCs, incense smoke also contains carcinogens and irritants, which can lead to respiratory diseases. A 2021 study confirmed that some of the particulate matter in incense smoke is carcinogenic, meaning it could cause cancer. There is an association between higher cancer risk and incense use, particularly for upper respiratory tract and lung carcinomas. The smoke also contains various irritants, which have been linked to the development of respiratory allergies and asthma. Studies suggest that incense smoke can trigger chronic inflammation in the body, including airway inflammation and remodelling. Furthermore, incense smoke has been associated with an increased risk of allergic contact dermatitis and neoplasm.
To reduce the potential risks associated with incense burning, it is recommended to limit exposure to the smoke. This can be achieved by reducing the amount of time incense is burned, choosing natural plant-based incense, ensuring adequate ventilation or using an air purifier, or burning incense outdoors. It is also important to be cautious when handling incense sticks, as they can easily catch fire or cause burns.
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Burning incense increases levels of chemicals called polycyclic aromatic hydrocarbons (PAHs), which are linked to cancer
Burning incense has been linked to an increased risk of cancer. This is because incense smoke contains particulate matter, gas products, and organic compounds that can be harmful when inhaled.
One of the harmful chemicals released by burning incense is polycyclic aromatic hydrocarbons (PAHs). PAHs are created by burning any organic material, including tobacco leaves, coal, and incense sticks. While the presence of PAHs alone does not indicate risk, higher levels of these chemicals have been associated with cancer.
A study published in the International Journal of Environmental Research and Public Health found that burning incense indoors resulted in the release of benzene, formaldehyde, and other volatile organic compounds (VOCs) that exceeded the levels recommended by the World Health Organization (WHO). Incense smoke has also been found to contain particulate matter that is carcinogenic and can lead to respiratory diseases such as asthma.
The potential health risks associated with incense burning depend on the overall amount of exposure and the type of incense being burned. To reduce the risks, it is recommended to limit the amount of time incense is burned, choose natural plant-based incense, ensure adequate ventilation, or burn incense outdoors.
In addition to the health risks, burning incense can also cause damage to surfaces such as wood, furniture, or floors. The ash and smoke can cause discolouration, and cheaper incense sticks made with lower-quality materials may produce more harmful smoke. It is important to always burn incense on a heat-resistant surface and to avoid burning it around flammable objects or substances that can create dangerous fumes, such as alcohol or aerosol.
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Incense smoke contains toxic chemicals that can cause intellectual decline, cognitive aging, and an increased risk of Alzheimer's Disease
Incense has been used for thousands of years, and its benefits are well-known. However, recent studies have suggested that burning incense can release toxic chemicals that are harmful to health.
The smoke from incense contains natural and unnatural ingredients that create small, inhalable particulate matter. Some of these toxic chemicals have been associated with intellectual decline, cognitive aging, and an increased risk of Alzheimer's Disease. The particulate matter in incense smoke contains carcinogens and irritants, which can lead to respiratory diseases such as asthma. A 2009 study confirmed that some of the particulate matter in incense smoke is carcinogenic, and a 2021 study found that incense smoke induced oxidative stress and airway hyperresponsiveness in mouse lungs.
Research has also shown that burning incense is linked to poor air quality and increased levels of toxic chemicals called volatile organic compounds (VOCs). These compounds, such as benzene and formaldehyde, are associated with a host of health problems. A study published in the International Journal of Environmental Research and Public Health found that burning incense indoors resulted in levels of VOCs that exceeded the limits recommended by the World Health Organization (WHO).
Additionally, studies have found that incense burning can induce functional changes in the brain that may reduce cognitive resilience and increase vulnerability to future cognitive decline. Compared to non-users, incense users performed poorly on measures of global cognition, executive functions, visuospatial functions, and memory. While there is currently a lack of published data showing a direct link between incense burning and cognitive health, the available research suggests that pollutants emitted from incense smoke are associated with accelerated cognitive aging, intellectual decline, and an increased risk of Alzheimer's Disease.
To reduce potential health risks, it is recommended to limit exposure to incense smoke by reducing the amount of time incense is burned, choosing natural plant-based incense, ensuring adequate indoor air ventilation, or burning incense outdoors.
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Burning incense indoors can facilitate the transmission of viruses, such as SARS-CoV-2, by releasing coarse and fine particles into the air
Burning incense has been a common practice for thousands of years, with people experiencing its many benefits. However, recent studies have also suggested that burning incense, especially indoors, can have adverse health effects and cause indoor air pollution.
One of the main concerns regarding indoor incense burning is its ability to facilitate the transmission of viruses, specifically the SARS-CoV-2 virus, which causes COVID-19. According to research, incense burning increases the spread of the SARS-CoV-2 virus by releasing coarse and fine particles into the air. These particles, known as particulate matter or PM, can act as carriers for the virus droplets, making it easier for the virus to spread through inhalation.
The particles released by burning incense are classified as coarse (PM10) and fine (PM2.5). PM10 particles have an aerodynamic diameter of less than 10 micrometres, while PM2.5 particles have a diameter of less than 2.5 micrometres. These particles are capable of dispersing throughout a house, even into rooms with closed doors or on different floors. The dispersion of these particles increases the likelihood of indoor exposure for occupants.
In addition to facilitating virus transmission, the coarse and fine particles released from burning incense can also have other health implications. These particles contain toxic and irritant compounds, including heavy metals and polycyclic aromatic hydrocarbons (PAHs), which have been linked to respiratory ailments and an increased risk of cancer. The smoke from incense burning can trigger asthma and respiratory allergies, and it has also been associated with childhood asthma and chronic inflammation in the body.
To mitigate the potential risks associated with indoor incense burning, it is recommended to improve indoor ventilation, limit the amount of time incense is burned, or opt for burning incense outdoors. Additionally, individuals with respiratory illnesses or children should avoid spaces with incense burning, especially in poorly ventilated areas.
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Incense ash can cause damage to surfaces such as wood, furniture, or floors
When burning incense, it is important to be cautious and avoid holding the incense stick too close to the burner, as this can cause the stick to catch fire. Similarly, be careful not to put too much pressure on the stick when lighting it. To prevent fires, always use an incense holder or stand to keep the sticks upright and monitor the incense while it is burning. Avoid burning incense around flammable materials, such as wood or fabric, and keep it away from alcohol, hairspray, aerosols, or other substances with high alcohol or petroleum content.
To summarise, incense ash can damage surfaces, particularly those that are not heat-resistant. It is important to take precautions when burning incense to avoid potential fire hazards and to use high-quality incense to minimise the risk of harmful smoke.
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Frequently asked questions
Burning incense produces particulate matter, gas products, and organic compounds that can cause air pollution, which has been linked to respiratory system dysfunction and other health problems. Studies have also found a correlation between incense use and cancer, asthma, and heart disease.
A recent study found that indoor incense burning is associated with worse cognitive performance and decreased brain connectivity.
Incense ash can cause discolouration and damage to surfaces such as wood, furniture, or floors. Incense should always be burned on a heat-resistant, non-flammable surface to avoid the risk of fire.
If you are concerned about the risks associated with incense, you can explore alternatives such as essential oils to make your home smell nice.
To reduce the risks, it is recommended to limit the amount of time you burn incense, choose natural plant-based incense, use adequate indoor air ventilation or an air purifier, or burn incense outdoors.











































