
Incense is a smoke-emitting substance that has been used for thousands of years for hygienic, spiritual, and health purposes. However, recent research has revealed that there could be some health drawbacks to burning incense. The smoke released contains particulate matter, gas products, and organic compounds that can be easily inhaled and may cause negative health outcomes. While some studies have found associations between incense burning and various health issues, others have concluded that moderate use of high-quality natural incense poses minimal health risks. So, is all incense bad for you? Let's explore the evidence and discuss the precautions you can take to minimize any potential risks.
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What You'll Learn
- Incense smoke contains particulate matter, which can be easily inhaled and may have negative health outcomes
- Burning incense may trigger asthma and other respiratory allergies
- Incense smoke contains irritants that can cause allergic contact dermatitis
- Burning incense may cause issues with brain health in older adults
- Incense smoke has been associated with an increased risk of heart disease

Incense smoke contains particulate matter, which can be easily inhaled and may have negative health outcomes
Incense smoke contains various irritants, and studies have shown that it can trigger allergic reactions in the eyes, nose, throat, and skin. A series of clinical case reports have indicated that incense smoke can cause allergic contact dermatitis. For example, a 63-year-old man who had burned incense for about 15 years presented with itchy, depigmented macules on his left dorsum manus, left shoulder, and abdomen. In another case, a woman who burned incense daily for approximately five years developed airborne pigmented contact dermatitis due to musk ambrette in the incense.
The smoke emitted from burning incense also contains gas products and organic compounds, including CO, CO2, NO2, SO2, benzene, toluene, and xylenes. These pollutants can cause respiratory system dysfunction and have been associated with respiratory problems such as asthma and acute respiratory distress syndrome. Prolonged exposure to incense smoke may result in higher concentrations of NOx penetrating deeper into the lower airways, leading to delayed-onset respiratory issues.
Additionally, incense smoke has been linked to an increased risk of certain health conditions, including heart disease and childhood asthma. Some studies have also suggested a potential association between incense burning and cancer, with one study finding an increased risk of leukemia in children whose parents burned incense frequently. However, it is important to note that these studies have limitations, and further research is needed to establish causal relationships.
While the potential health risks associated with incense burning are concerning, it is worth noting that high-quality natural incense, when used in moderation and with proper ventilation, is believed to pose minimal health risks. The Australian Government Cancer Council has stated that incense use is safe in normal amounts, and the risk of cancer is very small, if at all.
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Burning incense may trigger asthma and other respiratory allergies
Burning incense has been associated with an increased risk of developing asthma and other respiratory allergies. The smoke released from burning incense contains particulate matter that can be easily inhaled and may have negative health outcomes. Research has found that incense smoke contains various irritants, which can cause irritative responses, including allergic reactions in many parts of the body, such as the eyes, nose, throat, and skin.
A series of clinical case reports have indicated that incense smoke can cause allergic contact dermatitis. For example, a 63-year-old man who had burned incense for about 15 years presented with itchy, depigmented macules on his left dorsum manus, left shoulder, and abdomen. The perfume in the incense was identified as the cause. In another case, a woman who had burned incense daily for approximately five years developed airborne pigmented contact dermatitis due to musk ambrette in the incense.
Multiple epidemiological studies have indicated the adverse effects of incense burning on the respiratory system and lung function development in children. Regular incense burning has been associated with diagnosed childhood asthma and allergies, with the level of significance doubling in the presence of paternal heredity. Prolonged exposure to incense smoke may allow higher cumulative concentrations of NOx to penetrate deeper into the lower airways, resulting in delayed-onset respiratory problems. In cases of severe acute exposure, patients may experience shortness of breath, cough, or symptoms consistent with acute respiratory distress syndrome.
While some studies have found a correlation between incense burning and respiratory issues, it is important to note that the results are not conclusive. The specific mechanisms by which incense burning may contribute to respiratory problems require further investigation. Additionally, it is worth considering that the average incense user is likely to burn fewer incense sticks per day than the number of cigarettes smoked by a typical smoker. The distance between the incense and the user also allows the smoke to mix and dilute with the air before being inhaled.
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Incense smoke contains irritants that can cause allergic contact dermatitis
Incense is a smoke-emitting substance, and like anything else that emits smoke, it may be accidentally inhaled when used. Incense smoke contains particulate matter, gas products, and many organic compounds. The particulate matter in incense smoke contains irritants and carcinogens, which can be easily inhaled and may have negative health outcomes.
In fact, incense smoke has been associated with an increased risk of heart disease and cancer. It has also been linked to respiratory problems, with research associating it with childhood asthma and the development of respiratory allergies. This is because incense smoke contains various irritants, which can cause allergic reactions in many parts of the body, such as the eyes, nose, throat, and skin.
A series of clinical case reports have indicated that incense smoke can cause allergic contact dermatitis in various parts of the body. For example, a 63-year-old man who had practiced incense burning for about 15 years presented with itchy, depigmented macules on his left dorsum manus, left shoulder, and abdomen. The perfume in the incense was identified as the cause. In another case, a woman who had burned incense daily for approximately five years developed airborne pigmented contact dermatitis due to musk ambrette in the incense.
Additionally, a cross-sectional study of temple workers in Kao-Hsiung, Taiwan, compared to a group of church workers, found that temple workers had a higher prevalence of acute irritative symptoms, including eye irritation, nasal secretions, throat dryness or congestion, and nausea. This suggests an association between occupational exposure to incense burning and an increased risk of developing acute irritation.
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Burning incense may cause issues with brain health in older adults
Burning incense is a religious ritual practised in many cultures and is especially popular among older adults. Incense is made from a mixture of fragrance materials and herbal, wood, and adhesive powder. When incense is burnt, it releases pollutants, including particulate matter (PM), carbon monoxide (CO), carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen dioxide (NO2), volatile organic compounds, aldehydes, and polycyclic aromatic hydrocarbons (PAHs). Incense burning is considered a major source of indoor air pollution, with the amount of PM generated by incense being up to 4.5 times that of cigarettes.
Several studies have investigated the effects of indoor incense burning on the brain health of older adults. One study found that incense burning was associated with poorer cognitive performance and reduced brain connectivity in older adults. Another study suggested that incense burning induces functional changes in the brain that may reduce cognitive resilience and increase vulnerability to future cognitive decline. This study also found that incense burning appeared to interact with vascular diseases, predisposing individuals to poor cognitive functioning and potentially playing a role in vascular cognitive impairment (VCI).
The precise mechanisms underlying the relationship between incense burning and brain changes are not yet fully understood and require further investigation. However, the current research suggests that indoor incense burning may be detrimental to the cognitive and brain health of older adults. Given the high prevalence of vascular burden in this population, the practice of burning incense indoors should be approached with caution.
To minimise potential health risks, some safer alternatives to traditional incense can be used. For example, "smokeless" or reduced-smoke incense varieties are available from some Japanese companies. Additionally, avoiding burning incense indoors or burning incense in a well-ventilated area can help reduce exposure to the pollutants released during incense burning.
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Incense smoke has been associated with an increased risk of heart disease
The particulate matter in incense smoke can be easily inhaled and may have negative health outcomes. It contains natural and unnatural ingredients, including various irritants that can trigger allergic reactions in many parts of the body, such as the eyes, nose, throat, or skin. For example, a 63-year-old man who had burned incense for about 15 years developed itchy depigmented macules on his left dorsum manus, left shoulder, and abdomen. Another case involved a woman who burned incense daily for approximately five years and experienced airborne pigmented contact dermatitis due to musk ambrette in the incense.
In addition to the risk of heart disease, incense smoke has been associated with an increased risk of childhood asthma and the development of respiratory allergies. It can also cause chronic inflammation in the body, which stems from the body processing particulate matter into metabolites, leading to oxidative stress.
Furthermore, incense burning has been linked to an increased risk of cancer. A study in Singapore tracked the health of 61,000 people and found that while incense use is generally safe in normal amounts, there may be a small risk of cancer associated with its use. Other studies have found that burning incense indoors increases the levels of polycyclic aromatic hydrocarbons (PAHs), which are known carcinogens.
To minimize the potential health risks associated with incense burning, it is recommended to use high-quality natural incense in moderation and with common sense. Ventilating the area where incense is burned and ensuring you are not sitting too close to the smoke can also help reduce exposure to any potential pollutants.
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Frequently asked questions
Breathing in any smoke is bad for your health to an extent. Incense smoke contains particulate matter, which can be easily inhaled and may have negative health outcomes. However, high-quality natural incense, when used in moderation and with common sense, poses minimal health risks.
Burning incense may trigger asthma and has been associated with an increased risk of heart disease. It is also linked to childhood allergies and chronic inflammation in the body. Incense smoke contains irritants, which can cause allergic reactions in various parts of the body, such as the eyes, nose, throat, or skin.
Some Japanese incense companies offer "smokeless" or reduced-smoke incense. It is recommended to avoid perfumed incenses that use strong-smelling liquids and may contain noxious synthetic ingredients, including carcinogens.
It is recommended to regularly ventilate the area where incense is burnt and to ensure you are not sitting too close to the incense smoke. You can also light incense in an adjacent room or enter the room after the incense has mostly or entirely burned out.











































