
Incense is a popular fragrant product that is burned to release scented smoke. While incense is typically made from natural materials such as sage, resins, oils, and wood, manufacturers may add other materials to enhance their fragrance, ability to burn, and ability to hold their shape. The addition of these extra materials can result in incense that smells like chemicals. Burning incense has been associated with several health risks, including worsening brain health, increased risk of asthma, cancer, and heart disease, and developmental delays.
| Characteristics | Values |
|---|---|
| Incense base | Charcoal or wood powder |
| Incense fragrance | Natural materials such as sage, resins, oils, wood, herbs, spices, flowers, and resins |
| Incense fragrance | Unnatural materials |
| Health risks | Exposure to toxic chemicals, worsening brain health, increased risk of asthma, cancer, and heart disease |
| Health risks | Pregnant women exposed to incense have a higher risk of hypertensive disorders and higher blood pressure levels |
| Health risks | Household incense burning is linked to developmental delays in infants |
| Health risks | Incense smoke can trigger chronic inflammation in the body and lungs |
| Health risks | Incense smoke may contain particulate matter that can be easily inhaled and may have negative health outcomes |
| Health risks | Incense cones are more likely to cause air pollution than incense sticks |
| Health risks | Children and people with respiratory illnesses should avoid incense |
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What You'll Learn

Incense contains natural and unnatural ingredients
Incense is a smoke-emitting substance that contains a mixture of natural and unnatural ingredients. It is made from a variety of materials, with historical preferences for using locally available ingredients. For example, indigenous peoples of North America used sage and cedar, while the Chinese have traditionally used agarwood and sandalwood. Incense makers today add various materials to enhance fragrance, improve burning ability, and help hold the incense blend materials together.
The natural ingredients in incense include plant-based binders such as gum arabic or gum tragacanth, which are used to bind the mixture together. Mucilaginous material, derived from botanical sources, is mixed with fragrant materials and water. The dry binding powder usually comprises about 10% of the dry weight in the finished incense. Charcoal or wood powder provides fuel for combustion, while an oxidizer like sodium nitrate or potassium nitrate sustains burning.
The unnatural ingredients in incense include synthetic perfume ingredients, such as those used in Indian incense sticks. These sticks are made by rolling a bamboo stick in a paste of charcoal dust, adhesive powder, and synthetic perfume liquid. Synthetic perfumes are also sometimes sprayed onto coated sticks.
The particulate matter created by burning incense contains toxic and irritant compounds, which can have negative health effects. A 2021 study confirmed that some of these compounds are carcinogenic and could lead to respiratory diseases such as asthma. Burning incense has also been associated with an increased risk of heart disease and cognitive issues in older adults.
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Incense smoke may be hazardous to health
Recent studies have found a correlation between incense use and an increased risk of cancer, heart disease, and respiratory issues. The particulate matter in incense smoke can cause chronic inflammation in the body, which stems from the body processing particulate matter into metabolites, resulting in oxidative stress. Furthermore, the smoke released during the burning process contains harmful constituents, including carbon dioxide, carbon monoxide, sulfur dioxide, formaldehyde, nitrogen dioxide, and polycyclic aromatic compounds. These toxic and irritant compounds could create other negative health effects.
A 2020 study found that burning incense may negatively impact brain health in older adults over 65 years of age. The study observed delays in cognitive performance and a decrease in brain connectivity, possibly due to long-term air pollution caused by incense burning, resulting in smaller brain and prefrontal cortex volumes. However, it is important to note that this study was conducted on rats, and further research on humans is necessary.
In addition to the health risks, some people may find the smell of incense unpleasant. Some incense products may have a strong smoke or burning smell, with only a hint of perfume. Charcoal disks, which are required to burn loose incense and resin, are often doused in lighter fluid and other chemicals, which can be off-putting to some users. Electric burners or burner cases with perforated holes can be used to reduce the amount of smoke released into the air, improving the scent.
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Incense can be used to repel mosquitoes
Incense is typically made from natural materials such as sage, resins, oils, and wood. However, manufacturers sometimes add other materials to enhance their fragrance, burnability, and structural integrity. The smoke released by incense has a sweet, pleasant smell, but it may also contain particulate matter that can be inhaled and have negative health effects.
There are several types of fragrances available that can be used to repel mosquitoes, including citronella, lemon, lavender, laurel, rosemary, basil, and peppermint. These fragrances can be burned in the form of incense sticks, candles, or oils. It is recommended to use thicker and longer incense sticks for outdoor use. Additionally, lavender essential oil is known for its calming effects, such as relieving stress and promoting restful sleep. Peppermint oil has a longer protection time compared to other essential oils.
To use incense sticks for mosquito repellent, light the end of the stick until a flame appears. Wait a few seconds, then gently blow out the flame. Place the incense stick in a holder, flower pot, or moist dirt. This will help create a mosquito-free zone while also providing a pleasant aroma.
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Incense is used for spiritual purposes
Incense is a smoke-emitting substance that has been used for spiritual purposes since ancient times. The practice of burning incense is believed to deepen attention and empower spiritual focus. It is used in various religious and spiritual settings worldwide, from Catholic churches to Native American ceremonies.
In ancient Egypt, priests burned incense during fumigation ceremonies and in tombs. It was also used in sacred ceremonies reserved for holy temples. The burning of incense is seen as a way to express love for the universe and honour various deities.
Today, incense is often used during meditation to create a calming environment and enhance spiritual connections. It can also be used to purify the air, getting rid of unwanted smells and even eliminating pathogenic bacteria, according to some studies. Incense can also be beneficial for sleep, with aromas like lavender, chamomile, and vetiver inducing calmness and restfulness.
The type of incense used for spiritual purposes usually consists of resins like frankincense and myrrh, herbs like sage, and woods like sandalwood or palo santo. These natural materials are burned loosely over coals, sometimes with a natural combustible ingredient like makko powder added.
However, it is important to note that recent research has raised concerns about the potential health risks associated with burning incense. Some studies suggest that incense smoke can trigger chronic inflammation in the body and has been linked to an increased risk of asthma, heart disease, and cancer. As such, it is recommended to opt for all-natural, sustainably cultivated incense and avoid synthetic or artificial varieties, especially if one has pre-existing respiratory conditions.
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Incense smoke may cause chronic inflammation
Incense is a smoke-emitting substance made from natural and unnatural ingredients, including wood, resins, powders, and oils. It is used in many cultures for hygienic, spiritual, and health purposes. However, recent research has revealed potential health drawbacks associated with burning incense.
Incense smoke contains particulate matter, which can be easily inhaled and may have negative health outcomes. Studies suggest that incense smoke can trigger chronic inflammation in the body. This inflammation is caused by the body processing particulate matter into metabolites, which also leads to oxidative stress. While further research is needed, the existing evidence suggests that burning incense may negatively impact brain health in older adults, potentially causing delays in cognitive performance and a decrease in brain connectivity.
The smoke released from burning incense contains various irritants and carcinogens, which can lead to respiratory diseases such as asthma. In addition, incense smoke has been associated with an increased risk of heart disease and cancer. A 2021 study confirmed the presence of carcinogens in the particulate matter, specifically upper respiratory tract carcinomas and lung carcinomas.
The adverse health effects of incense smoke are not limited to respiratory issues. A study among 50 housewives in Taipei found that incense burning was associated with increased indoor levels of PM2.5, which can modify heart rate variability indices. This effect modification may link incense burning to an increased risk of cardiovascular diseases and mortality. Furthermore, incense burning has been associated with increased levels of air pollutants, such as NOx and SO2, which can have harmful effects on health.
While the potential health risks associated with incense burning are concerning, it is important to note that some alternatives are available for those who wish to continue using incense. For example, using an electric burner instead of burning incense directly can help reduce the amount of smoke released into the air. Additionally, some incense brands, such as HolySmokeIncense, are known for their pleasant smell and lack of chemical odor.
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Frequently asked questions
Yes, incense can smell like chemicals. Incense is a smoke-emitting substance, and the smoke released can contain particulate matter that is easy to inhale and may have negative health outcomes. Incense contains both natural and unnatural ingredients, and the combustible base of a direct-burning incense mixture binds the fragrant material together.
Burning incense has been linked to several health risks, including asthma, cancer, hypertension, developmental delays, and inflammation. Studies suggest that incense smoke can trigger chronic inflammation in the body and lungs, and incense smoke has been associated with an increased risk of heart disease and brain health issues.
Yes, if you are concerned about the health risks associated with burning incense, there are alternatives available. You can explore natural plant-based incense or use essential oils to make your home smell nice. You can also use an electric burner instead of burning incense directly, which can help reduce the amount of smoke produced.











































