
Burning incense is a common household practice, especially in Taiwan. However, it is a source of indoor air pollution, with incense smoke containing carbon monoxide, carbon dioxide, sulfur dioxide, nitrogen dioxide, and volatile organic compounds. This has been associated with a delay in gross motor neurodevelopment in infants. In addition, burning incense during pregnancy and after the baby is born may have negative health consequences for the baby, including an increased risk of developing leukemia.
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What You'll Learn

Burning incense during pregnancy
Firstly, incense smoke contains harmful components similar to those in cigarette smoke, such as particulate matter (PM2.5 and PM10), carbon monoxide, nitrogen dioxide, sulfur dioxide, and volatile organic compounds. These fumes can cause respiratory issues and allergies, and there is evidence to suggest that incense burning may be associated with an increased risk of cancer in the respiratory tract.
Secondly, studies have found that incense burning during late pregnancy is associated with higher risks of hypertensive disorders and higher blood pressure levels. This is particularly concerning as hypertensive disorders during pregnancy can lead to other adverse outcomes.
Additionally, a study from Taiwan suggested that exposure to incense burning during pregnancy may be associated with lower birth weights in boys and smaller head circumferences in both boys and girls.
While the occasional use of incense during pregnancy may not cause significant harm, it is important to note that there is currently no evidence explicitly stating that incense is safe during pregnancy. Therefore, it may be wise for pregnant women to avoid burning incense or, at the very least, limit their exposure to it.
Some new mothers have also expressed concerns about the potential impact of burning incense around their newborns, especially in enclosed spaces with poor ventilation. While there may be conflicting opinions on this matter, it is generally advisable to prioritize the health and safety of infants by avoiding exposing them to potentially harmful fumes or smoke.
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Incense as an indoor air pollutant
Burning incense is considered a major source of indoor air pollution. The amount of particulate matter (PM) generated by incense can be up to 4.5 times that of cigarettes. Incense smoke is associated with carcinogenicity, increased cardiovascular mortality, and respiratory conditions. It is also linked to accelerated cognitive ageing, intellectual decline, and an increased risk of Alzheimer's Disease and vascular dementia.
The gaseous emissions of different types of incense contain various volatile organic compounds (VOCs) that are known or suspected to cause severe chronic health effects, including benzene, toluene, styrene, naphthalene, furfural, furan, isoprene, 2-butenal, phenol, 2-furyl methyl ketone, formaldehyde, acetaldehyde, acrolein, and furan. The levels of acetaldehyde, acrolein, furfural, and furan are particularly concerning and deserve attention.
The type of incense product also makes a difference in terms of indoor air pollution. Studies indicate that incense cones are more likely to be more pollutant than incense sticks. Benzene and formaldehyde are present in worrying levels in a significant number of products, exceeding the guideline values established by the WHO.
To reduce the impact of indoor air pollution from incense, it is recommended to increase ventilation by opening windows during and after burning. This will help to dilute the concentration of contaminants in the area. However, it is important to note that burning incense, regardless of the type or ventilation, releases pollutants into the air that can be harmful to health, especially for vulnerable individuals such as babies.
While some sources claim that incense can improve indoor air quality and offer various benefits such as soothing anxiety, enhancing focus, and stimulating creativity, it is important to prioritize the health and safety of individuals, especially babies, who may be more susceptible to the negative effects of indoor air pollution.
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Incense and infant respiratory health
Incense burning is a common household practice in many parts of the world. However, it is essential to understand the potential health risks associated with this tradition, especially when infants are present in the household.
Burning incense produces fumes containing various gases, including carbon monoxide, carbon dioxide, sulfur dioxide, and nitrogen dioxide. These fumes can negatively impact the respiratory tract, leading to respiratory issues in infants. Additionally, the smoke released during incense burning can contain volatile organic compounds, which can further aggravate respiratory conditions.
Several studies have been conducted to investigate the impact of incense burning on infant respiratory health. One notable study, the Taiwan Birth Cohort Study, found a link between household incense burning and delays in gross motor neurodevelopmental milestones. The study suggested that continuous exposure to incense smoke increased the risk of developmental delays, with periodically exposed infants still facing an elevated risk. Specifically, infants exposed to incense smoke were found to have a higher risk of being slow to learn to walk with support, indicating a potential impact on their overall motor skills development.
To minimize the potential respiratory health risks to infants, it is recommended to limit their exposure to incense smoke. This can be achieved by burning incense only occasionally, such as during holidays and festivals, and ensuring proper ventilation during and after burning. Maintaining good air circulation by opening windows or using air purifiers can help dissipate the smoke and reduce the concentration of harmful gases and compounds.
In conclusion, while incense burning may be a traditional practice in many households, it is important to be mindful of its potential impact on infant respiratory health. By understanding the risks and taking appropriate measures to limit exposure, caregivers can help create a safer environment for infants, reducing the chances of respiratory issues and promoting their overall well-being.
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Incense and infant motor development
The use of incense has been a topic of debate for new parents, with many questioning its potential impact on their babies' health and development. While some may argue that the practice is harmless, recent studies suggest that there may be cause for concern, especially in relation to infant motor development.
The Taiwan Birth Cohort Study, published in 2018, specifically investigated the association between household incense burning and infant gross motor development. The study found that exposure to incense burning was linked to a delay in gross motor neurodevelopmental milestones. Babies who were continuously exposed to incense smoke had a 44% higher risk of being slow to learn to walk with support, while periodic exposure increased the risk by 26%. These findings highlight a potential cause-and-effect relationship between incense use and infant development.
The study's large sample size of 15,310 term singletons adds weight to its conclusions. Furthermore, the research aligns with existing knowledge about the health risks of incense use. Incense burning produces fumes containing gases like carbon monoxide, carbon dioxide, sulfur dioxide, and nitrogen dioxide, as well as potentially volatile organic compounds. These fumes primarily affect the respiratory tract, but they can also have broader implications for overall health.
While the study suggests a correlation between incense burning and delayed motor development, it is important to note that the underlying mechanism is not yet fully understood. The researchers recommended further investigation to elucidate the possible causal relationship. Additionally, it is worth considering that cultural practices, such as burning incense during specific holidays and festivals, may influence the interpretation of the findings.
In conclusion, while the tradition of burning incense may be important to some families, it is crucial to be mindful of the potential risks associated with indoor air pollution. To ensure the safety and well-being of infants, it is advisable to limit their exposure to incense smoke and prioritize good air ventilation. More research is needed to comprehensively understand the impact of incense burning on infant motor development, but in the meantime, adopting precautionary measures is prudent.
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Incense ingredients and allergies
Burning incense releases particulate matter, gases, and volatile organic compounds into the air. The particulate matter in incense smoke can contain carcinogens and irritants, which can lead to respiratory diseases such as asthma and allergies. The organic compounds found in incense smoke include benzene, toluene, and xylenes, as well as aldehydes and polycyclic aromatic hydrocarbons (PAHs). These compounds are toxic to the lungs and can cause allergic reactions in the skin and eyes.
The specific ingredients in incense vary depending on the type and manufacturer, but typically, incense is made from a combination of herbal and wood powder, fragrance materials, adhesive powder, and a bamboo stick base. Some common natural ingredients used in incense include sage, resins, oils, and wood. However, it is important to note that the ingredients used in incense are not always known, and some incense may contain unnatural or synthetic materials.
While the effects of incense smoke on health can be relatively difficult to study directly, several epidemiological studies have suggested that incense smoke pollutants can cause health problems when inhaled. These problems can include respiratory system dysfunction, dermatitis, and, in some cases, an increased risk of certain types of cancer, particularly upper respiratory tract carcinomas and lung carcinomas.
To reduce the potential health risks associated with incense smoke, it is recommended to limit exposure by burning incense with open windows or using alternatives such as Japanese low-smoke incense or air purifiers designed for smoke particulate filtration.
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Frequently asked questions
Burning incense produces fumes containing gases like carbon monoxide, dioxide, sulfur dioxide, and nitrogen dioxide. Studies have shown that incense burning is associated with a delay in gross motor neurodevelopment. It is advised to limit exposure to incense smoke, especially for babies.
If you like the smell of incense, you could consider using an air purifier to get rid of any unpleasant smells.
Burning incense around babies can cause allergies and asthma reactions. It can also cause respiratory discomfort.
The effects of incense smoke on health are smaller than those of second-hand and third-hand smoke. However, it is still a source of indoor air pollution and can contain harmful substances like polycyclic aromatic hydrocarbons, lead, and other heavy metals.
Incense burning is a common household ritual practice in some cultures, such as Taiwan. In these cases, it is recommended to burn incense only for short periods during holidays and festivals and to maintain good air ventilation.











































