Heidi Norton
Incense is a smoke-emitting substance that has been used for thousands of years for hygienic, spiritual, and health purposes. However, recent studies have revealed that there could be some health drawbacks to burning incense. A 2020 study found that burning incense may cause issues with brain health in adults over 65 years old, including delays in cognitive performance and a decrease in brain connectivity. Another study found that incense smoke was more cytotoxic and genotoxic than cigarette smoke, meaning it is potentially more toxic to cells and their genetic contents. However, it is important to note that the sample size of this study was small, and there are many different types of incense and cigarettes on the market. While the health risks of incense are not yet fully understood, it is advisable to reduce exposure to any kind of smoke to minimize potential health risks.
| Characteristics | Values |
|---|---|
| Particulates produced | Incense: >45 mg/g burned; Cigarettes: 10 mg/g burned |
| Gas products | Incense: CO, CO2, NO2, SO2, volatile organic compounds (e.g. benzene, toluene, xylenes), aldehydes, polycyclic aromatic hydrocarbons (PAHs); Cigarettes: not specified |
| Health risks | Incense: respiratory system dysfunction, elevated cord blood IgE levels, allergic contact dermatitis, neoplasm, mutagenic; Cigarettes: heart disease, lung cancer |
| Use cases | Incense: religious rituals, perfuming homes, hygiene, spiritual purposes; Cigarettes: not specified |
| Regulations | Incense: European regulations exist but are not well enforced; Cigarettes: prohibited in many public places |
| Consumer advocacy | Incense: Belgian consumer organization Test Aankoop advocates for a ban on several types of incense and regulations similar to those for cigarettes; Cigarettes: not specified |
| Research | Incense: limited research on human subjects, variety of incense types and methods of use may impact results; Cigarettes: not specified |
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What You'll Learn
Incense smoke may be more toxic than cigarette smoke
Incense burning has been a common practice in many Asian countries, where Buddhism and Taoism are mainstream religions. However, recent studies have raised concerns about the potential health risks associated with incense smoke, suggesting that it may be even more toxic than cigarette smoke.
A 2015 study by Dr. Zhou Rong and colleagues from the South China University of Technology compared the health hazards of incense smoke and cigarette smoke. The researchers found that incense smoke was more cytotoxic and genotoxic than the tested cigarette. In other words, incense smoke has a higher potential to damage cells and their genetic contents. The study also revealed that incense burning releases toxic compounds, including volatile organic compounds like benzene, formaldehyde, and polycyclic aromatic hydrocarbons (PAHs).
The high levels of particulate matter produced by incense burning are also concerning. On average, incense generates more than 45 mg/g of particulates when burned, compared to 10 mg/g for cigarettes. These fine particles can be inhaled, penetrating deep into the alveoli and causing respiratory system dysfunction. In addition, incense smoke has been linked to allergic contact dermatitis and elevated cord blood IgE levels.
Furthermore, a 2020 study found a potential link between incense burning and brain health issues in older adults. The study suggested that long-term exposure to incense smoke may lead to delays in cognitive performance and a decrease in brain connectivity. However, more research is needed to fully understand this relationship.
While the direct comparison between incense and cigarette smoke is complex due to the variety of incense types and usage differences, the available evidence suggests that incense smoke may pose significant health risks. To reduce these risks, it is advisable to limit incense use, ensure proper ventilation during and after burning, and explore alternative options if concerned about potential health issues.
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Incense smoke is a risk factor for elevated cord blood IgE levels
Burning incense is a common practice in Asian countries where Buddhism and Taoism are the dominant religions. A typical incense stick consists of herbal and wood powder, fragrance material, adhesive powder, and bamboo stick. Incense burning produces smoke that contains particulate matter, gas products, and organic compounds, including volatile organic compounds (VOCs) like benzene and formaldehyde, and polycyclic aromatic hydrocarbons (PAHs).
The smoke emitted by incense burning has been linked to various health issues, including respiratory system dysfunction and allergic contact dermatitis. In particular, incense smoke has been identified as a risk factor for elevated cord blood IgE levels. This association was studied by Lin et al., who examined umbilical cord blood IgE levels in 334 mother-neonate pairs and found that incense burning was a contributing factor to increased IgE levels.
The mechanism behind this association is speculated to involve lead exposure. Lead emitted from incense burning may be absorbed by particulate matter and subsequently transferred to fetal blood, influencing the fetal immune system and increasing IgE production. This hypothesis is supported by the detection of lead in samples collected at a temple in Taiwan, where incense burning is common.
While the relationship between incense burning, cord blood lead, and IgE levels requires further investigation, the existing evidence suggests that incense smoke exposure may have detrimental effects on fetal immune system development. These findings highlight the importance of reducing exposure to incense smoke, especially for pregnant individuals, and ensuring proper ventilation when incense is burned.
In summary, incense smoke has been identified as a risk factor for elevated cord blood IgE levels, potentially due to lead exposure. This knowledge contributes to our understanding of the health risks associated with incense burning and emphasizes the need for cautious and informed use of incense.
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Incense smoke is linked to respiratory system dysfunction
Incense burning is a popular activity worldwide, with a long history of use in religious and spiritual practices. However, recent studies have highlighted the potential negative impact of incense smoke on respiratory health.
The smoke emitted by burning incense contains a mixture of gaseous and particulate products, including volatile organic compounds like benzene, toluene, and xylenes, as well as aldehydes and polycyclic aromatic hydrocarbons (PAHs). These fine particles can be inhaled, leading to respiratory system dysfunction.
The particulate matter in incense smoke contains carcinogens and irritants, which can cause respiratory issues such as asthma. Research has also associated incense smoke with an increased risk of developing respiratory allergies and chronic inflammation in the body. A 2021 study confirmed the presence of carcinogens in incense smoke, linking it to upper respiratory tract carcinomas and lung carcinomas.
Additionally, incense smoke has been found to trigger cough symptoms and increase the risk of respiratory problems. While some studies suggest that short-term exposure may not significantly affect lung function, long-term exposure to incense smoke pollutants can lead to respiratory system dysfunction.
The negative impact of incense smoke is comparable to that of cigarette smoke. While incense does not contain nicotine and tar, it often includes carcinogenic ingredients like benzene and formaldehyde, which can be inhaled and lead to serious health issues.
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Incense smoke contains carcinogens
Incense smoke contains a multitude of well-characterized carcinogens. The smoke released by burning incense has been found to contain polycyclic aromatic hydrocarbons (PAHs), carbonyls, and benzene. It also produces volatile organic compounds, such as benzene, toluene, and xylenes, as well as aldehydes and PAHs. The indoor concentrations of particulate matter during incense burning have been found to exceed outdoor air quality standards.
The smoke emitted by incense burning has also been found to contain formaldehyde, a potent sensory irritant and probable human carcinogen. Wood dust that carries formaldehyde enhances its toxicity when intercepted and dissolved in water in the nasal cavity. This has been correlated with nasal cancer.
In addition, incense smoke has been associated with an increased risk of certain cancers of the upper respiratory tract, such as throat and mouth cancer. A study found that the small risk of developing upper respiratory tract cancers nearly doubled in people who used incense regularly. However, it is important to note that this study only showed a correlation and did not prove causation.
To reduce potential health risks, it is recommended to limit incense use and exposure to its smoke. Opening windows during or after use can help reduce exposure. Exploring alternatives to incense is also an option for those concerned about the potential risks.
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Incense smoke may cause issues with brain health
The findings indicate potential links between indoor incense burning and vascular cognitive impairment (VCI) in older adults. Incense smoke has been associated with accelerated cognitive ageing, intellectual decline, and an increased risk of Alzheimer's Disease and vascular dementia.
The adverse effects of incense smoke on brain health may be attributed to the release of pollutants during burning. These pollutants include particulate matter (PM), carbon monoxide (CO), carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen dioxide (NO2), volatile organic compounds, aldehydes, and polycyclic aromatic hydrocarbons (PAHs). These pollutants contribute to indoor air pollution and can be inhaled, potentially impacting the brain and cognitive functions.
While the precise mechanisms behind the relationship between incense burning and brain changes require further investigation, the existing evidence suggests that incense smoke may have detrimental effects on brain health, particularly in older adults with long-term exposure.
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Frequently asked questions
Burning incense inside the home is just as unhealthy as lighting a cigarette indoors. A study found that burning incense releases more toxic compounds than previously known. However, there are many variables to consider, such as the type of incense, the amount burned, and the duration of exposure. While incense does not contain nicotine and tar, it often contains carcinogenic ingredients like benzene, formaldehyde, acroleine, and naphthalene. It also releases carbon monoxide, which can cause nausea, headaches, and concentration problems in confined spaces.
Burning incense has been associated with respiratory system dysfunction, allergic contact dermatitis, and neoplasm. It also emits fine particulate matter that can be inhaled, potentially causing lung dysfunction and other acute health issues. Furthermore, a 2020 study linked long-term incense burning to issues with brain health in adults over 65, including delays in cognitive performance and reduced brain connectivity.
To reduce potential health risks, it is recommended to limit incense use and exposure to its smoke. Opening windows during and after burning incense can help reduce exposure. If you are concerned about the risks, there are alternatives to incense that can improve the scent of indoor spaces without the same health concerns.
