Brooke Martin
Scented candles are extremely popular, with sales increasing by 30% in the United States since the COVID-19 pandemic. However, there are concerns about the potential negative health effects of burning candles, particularly paraffin candles, which can release harmful chemicals such as volatile organic compounds (VOCs) and phthalates. Some people claim that candles release potentially harmful toxins, while others argue that candles don't contain enough toxins to pose a significant health risk. While there is some debate about the health effects of candle smell, it is important to consider the available scientific evidence and take precautions to ensure safe candle usage.
| Characteristics | Values |
|---|---|
| Fire hazard | Firefighters respond to approximately 7,400 structure fires caused by candles every year in the U.S. |
| Smoke inhalation | Smoke from candles can cause shortness of breath, coughing, and headaches. |
| Asthma and allergy irritants | Scented candles can trigger asthma attacks and allergies. |
| Lead poisoning | Candle wicks containing lead were phased out in the U.S. in the 1970s, but exposure to lead can damage the kidneys, nervous system, and affect brain development. |
| Particulate matter | Lower-quality candles emit more particulate matter, which can enter the lungs and potentially lead to heart and lung problems. |
| Volatile organic compounds (VOCs) | Burning scented candles releases VOCs, which may have short-term and long-term negative health effects. |
| Cancer risk | Scented candles may increase the risk of cancer due to the release of formaldehyde and other harmful gases. |
| Indoor air pollution | Burning scented candles indoors contributes to indoor air pollution by releasing pollutants such as formaldehyde, CO2, and VOCs. |
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What You'll Learn
Burning candles releases hydrocarbons, but it's not a significant health risk
While burning candles releases hydrocarbons, it does not pose a significant health risk. However, it is important to choose and burn candles wisely and responsibly.
The debate about whether burning candles is harmful to health has been ongoing. Some people claim that candles release potentially harmful toxins. However, others argue that candles do not contain enough toxins to be a health threat.
The fact is that burning candles does release hydrocarbons into the air. This occurs when the hydrocarbon wax combines with oxygen, releasing carbon dioxide, water vapour, and carbon monoxide. Additionally, the black soot emitted from paraffin candle flames contains particulate matter, which can irritate the lungs and contribute to respiratory issues. Furthermore, scented candles can release volatile organic compounds (VOCs) like formaldehyde, which may increase cancer risk, and fragrances can cause allergic reactions.
Despite these concerns, the amount of particulate matter released from burning candles is generally considered insufficient to cause health problems in humans. Studies have shown that burning paraffin wax releases potentially dangerous chemicals, but the quantities emitted from candle burning are typically not dangerous in isolation. While candles can contribute to indoor air pollution, burning them in a well-ventilated space minimises the impact on your health.
To burn candles safely, opt for high-quality candles from reputable sources. Avoid old or damaged candles, and be cautious with heavily scented candles, especially if you are sensitive to fragrances. It is also important to follow candle safety guidelines to minimise the risk of fire, the most significant hazard associated with candles.
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Lower-quality candles emit more toxins and chemicals
While there is little scientific evidence to suggest that candles are a danger to your health, the candle industry is not well-regulated. Lower-quality candles emit more toxins and chemicals, and there are concerns about the health effects of inhaling smoke and particulate matter.
Burning candles releases hydrocarbons into the air, including toluene and benzene. While candles do not release enough hydrocarbons to pose a significant health risk, exposure to toluene without proper ventilation can irritate the eyes, nose, throat, and skin, and cause headaches, dizziness, confusion, and anxiety. Benzene, meanwhile, is a known carcinogen.
Research shows that burning paraffin wax, which is made from petroleum, releases potentially dangerous chemicals such as volatile organic compounds (VOCs) and phthalates. People exposed to these chemicals have reported headaches, shortness of breath, and coughing. Lower-quality candles made from paraffin wax are more likely to emit these chemicals.
If you're concerned about exposure to toxins and chemicals, opt for high-quality candles made from natural materials such as beeswax or soy wax, and scented with essential oils rather than synthetic perfumes. These candles produce less soot and toxic chemicals than paraffin candles. Burning candles in a well-ventilated area can also help to minimise the risk of inhaling smoke.
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Burning paraffin wax releases potentially harmful chemicals
Burning candles is a simple pleasure for many, but it is important to be aware of the potential risks. While candles do not pose a significant health risk to most people, burning paraffin wax releases potentially harmful chemicals, and it is important to burn candles wisely and responsibly.
Paraffin wax is a popular material for candle-making due to its affordability and ease of use. However, it is derived from petroleum, a byproduct of gasoline production, and it has been found to contain toxins that are released during combustion. These toxins include volatile organic compounds (VOCs), phthalates, benzene, toluene, and formaldehyde. While these chemicals are present in small amounts, they can cause respiratory irritation, allergies, and potentially increase the risk of cancer. People exposed to these chemicals have reported headaches, shortness of breath, and coughing.
The risk of exposure to these chemicals is higher when burning paraffin candles in unventilated spaces, leading to indoor air pollution. To minimize this risk, it is recommended to burn candles in well-ventilated areas and opt for natural wax alternatives, such as coconut, soy, beeswax, or palm wax. These natural waxes produce less soot and are free of harmful chemicals, providing a cleaner and safer burn.
Additionally, it is worth noting that the candle industry is not well-regulated, and lower-quality candles tend to emit more particulate matter and chemicals. Therefore, investing in high-quality candles from reputable sources can help minimize potential risks.
While the smoke from burning candles in a well-ventilated area may not significantly affect your health compared to daily outdoor pollution, it is still advisable to minimize your intake of any type of smoke. Following candle safety guidelines and choosing natural wax alternatives can help create a healthier and more environmentally friendly experience.
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Scented candles can trigger asthma attacks and allergies
While candles are a great way to create a cosy atmosphere, there are some concerns about their potential impact on health. Scented candles, in particular, have been associated with a range of health issues, including triggering asthma attacks and allergies.
Burning candles releases hydrocarbons into the air, and while this may not pose a significant health risk to most people, it is important to choose and burn candles wisely. Lower-quality candles tend to emit more particulate matter and chemicals, and extended exposure to particulate matter has been linked to heart and lung problems.
The fragrance in scented candles is released through the evaporation of the hot wax pool and the solid candle itself, which emits volatile organic compounds (VOCs). These VOCs, such as formaldehyde, may have short-term and long-term negative health effects, and are known asthma and allergy irritants. A study of university students in Saudi Arabia found that scented candle users experienced asthma-like symptoms, with the most common health problems being headaches, shortness of breath, and coughing.
To minimise the potential health risks associated with scented candles, it is recommended to choose candles made from natural materials, such as beeswax or soy wax, and scented with essential oils rather than synthetic perfumes. Burning candles in well-ventilated areas can also help to reduce exposure to soot and potentially toxic byproducts.
In summary, while scented candles can have a positive impact on our emotional state, they may also trigger asthma attacks and allergies in some individuals. By choosing natural candles, ensuring proper ventilation, and being mindful of exposure time, we can enjoy the benefits of scented candles while minimising potential health risks.
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Burning candles indoors can cause indoor air pollution
Burning candles is a popular way to create a cosy atmosphere and fill a room with fragrance. However, it is important to be aware of the potential risks associated with this seemingly harmless practice, as burning candles indoors can indeed cause indoor air pollution.
Firstly, it is worth noting that the candle industry is not well-regulated, and lower-quality candles are often made from paraffin wax, a petroleum-based product. Research has shown that burning paraffin wax releases potentially harmful chemicals, including volatile organic compounds (VOCs) and phthalates. These chemicals have been linked to adverse health effects such as headaches, shortness of breath, and coughing. Additionally, paraffin candles produce more soot, which can contaminate ventilation systems and discolour walls and ceilings.
To minimise the risk of exposure to these toxins, it is recommended to opt for high-quality, natural candles made from beeswax, soy wax, or palm stearin. These alternatives produce less soot and toxic chemicals. However, even with natural candles, it is crucial to ensure proper ventilation when burning them indoors. Without adequate ventilation, the chemicals released by candles can accumulate and irritate the eyes, nose, throat, and skin, leading to headaches, dizziness, and even anxiety.
Another important consideration is the presence of lead in candle wicks, which has been phased out in the US since the 1970s due to its health risks. While candle wicks are now lead-free, the possibility of lead poisoning highlights the importance of choosing candles from reputable sources and following candle safety guidelines.
While the scientific community is divided on the extent to which candle emissions impact health, there is evidence of a link between candle burning and bladder cancer. Dr. Farooq explains that the volatile organic hydrocarbons released by candles accumulate in the blood and are excreted through the bladder, potentially increasing the risk of bladder cancer. Therefore, individuals with bladder cancer or chronic lung conditions may want to avoid burning candles or ensure excellent ventilation when doing so.
In conclusion, while burning candles can contribute to indoor air pollution, the impact on health is not significant for most people when candles are chosen wisely, burned responsibly, and used in well-ventilated spaces. However, for individuals with specific health concerns, it is essential to weigh the risks and take the necessary precautions to ensure a safe and enjoyable candle-burning experience.
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Frequently asked questions
Burning candles releases hydrocarbons into the air, but there is little scientific evidence to suggest that they are a danger to your health. However, there is a chance of an allergic reaction. Symptoms can include headaches, shortness of breath, and coughing.
If you are concerned about the potential health risks of scented candles, you can try using candles made from beeswax, soy wax, or other plant-based waxes. Flameless candles are also an option if you are looking to avoid fire risk.
Studies suggest that lower-quality candles emit more particulate matter and chemicals. Higher-quality candles burn off very slowly, so if you are looking to minimize risk, stick with higher-quality candles.
In well-ventilated homes, occasionally using candles with subtle scents is okay. However, candles with essential oils can be toxic to dogs if eaten, and the smoke or fumes can irritate respiratory issues or allergies in dogs and cats.
