Chloe Adams
Candles are a popular choice for creating a cosy atmosphere and eliminating unwanted odours, but are they harmful to our health? Burning candles can release chemicals and pollutants into the air, and the potential health risks depend on the type of candle and how it is burned. For example, candles made from paraffin wax, a petroleum byproduct, release more soot and toxic chemicals than those made from natural waxes like beeswax, soy, or plant-based alternatives. Scented candles, in particular, can contain harmful chemicals such as phthalates and heavy metals, and release volatile organic compounds (VOCs) that may have short-term and long-term negative health effects. However, some sources argue that the health risks of candles are overstated, and proper ventilation and candle care can minimise any potential dangers.
| Characteristics | Values |
|---|---|
| Burning candles releases hydrocarbons | Burning candles releases hydrocarbons, but not enough to pose a significant health risk to most people. |
| Candles made from natural sources are best | Soy candles produce less soot and toxic chemicals than paraffin candles. |
| Lead-containing candles | Due to concerns that fumes could cause lead poisoning, especially in children, lead-containing candles are no longer produced. |
| Volatile organic compounds (VOCs) | Burning paraffin wax releases VOCs and phthalates. People exposed to these chemicals reported headaches, shortness of breath, and coughing. |
| Limonene | Limonene is toxic at high levels. |
| Unscented candles | Burning an unscented candle is better than burning a scented candle. |
| Essential oils | Burning essential oils can alter their chemical composition and cause breathing problems. |
| Scientific opinion | Scientific and expert opinion on the safety of candles is mixed. |
| Allergic reactions | Many people have allergic reactions to scented candles. |
| Asthma | Scented candles can trigger asthma attacks. |
| Heavy metals | Candles may contain heavy metals that can pollute the air. |
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What You'll Learn
Paraffin wax candles may be toxic
There is a lot of confusion and debate surrounding the potential toxicity of paraffin wax candles. Paraffin wax is a by-product of petroleum, a non-renewable resource, and has been a staple in candle-making since its introduction in the 1850s. It is affordable, burns consistently, holds fragrance and colour well, and has an attractive finish.
Some sources claim that paraffin wax candles are toxic and release dangerous chemicals such as volatile organic compounds (VOCs), benzene, toluene, formaldehyde, and phthalates. These toxins are linked to health issues like respiratory irritation, allergies, and even cancer. Burning paraffin candles in unventilated spaces increases the risk of exposure to these chemicals, contributing to indoor air pollution.
However, other sources refute these claims, stating that fully refined paraffin wax is highly purified and non-toxic. They argue that the "paraffin is toxic" sentiment may have originated from valid concerns about less refined paraffin waxes, which should not be used for candle-making. Studies have shown that the combustion by-products of well-made paraffin candles are virtually identical to those of other waxes and pose no discernible risks to human health or indoor air quality.
While the potential toxicity of paraffin wax candles is a cause for concern, it is important to note that the amount of toxins released may not be significant enough to cause harm. Additionally, proper candle handling, such as trimming the wick and ventilating the room after extinguishing, can help minimise the potential risks associated with burning any type of candle.
In conclusion, while paraffin wax candles may release some toxins, the level of toxicity may not be as high as claimed, especially when compared to other waxes. However, it is always advisable to minimise your intake of any type of smoke and opt for natural alternatives if you are concerned about the potential health risks.
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Soy candles are healthier
There is an ongoing debate about whether candles are harmful to health. Some people claim that candles release potentially harmful toxins, while others argue that candles do not contain enough toxins to pose a significant health threat. It is important to note that burning almost anything can release chemicals that may be harmful, and it is always advisable to minimise smoke inhalation and ensure proper ventilation.
Soy candles have gained popularity as a healthier alternative to traditional paraffin candles. Soy wax is derived from soybeans, a natural and renewable resource, whereas paraffin wax is a by-product of petroleum refining. Soy candles are biodegradable and eco-friendly, and they produce less soot and toxic chemicals than paraffin candles. This results in cleaner air, walls, and furniture, improving the overall health of your home environment. Additionally, soy candles tend to burn more slowly and evenly, providing longer-lasting illumination.
The primary advantage of soy wax candles is their lower emission of toxins. They have been shown to emit fewer volatile organic compounds (VOCs) compared to paraffin candles, which is beneficial for indoor air quality. VOCs can aggravate allergies and respiratory issues, so reducing their presence is crucial for maintaining a healthy living space. However, it is important to note that both soy and paraffin candles release small amounts of soot and other particulates when burned, which can trigger respiratory issues in sensitive individuals. Proper ventilation remains essential regardless of the candle type.
While soy wax is derived from a natural source, processing often involves additives and chemicals to enhance its performance. The term "natural" does not equate to "chemical-free," so reading labels and opting for candles with minimal additives is recommended. Additionally, soy farming has been associated with deforestation and environmental harm, as well as the use of genetically modified soybeans and pesticides.
In conclusion, while soy candles offer certain advantages such as being a renewable resource and emitting fewer pollutants, the health benefits may be somewhat exaggerated. Both soy and paraffin candles have their merits and potential drawbacks. However, soy candles are generally considered a healthier option due to their lower emission of toxins and their positive impact on indoor air quality.
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Scented candles may be toxic
There is a lot of debate about whether scented candles are toxic and harmful to health. While some sources claim that scented candles can be toxic, others argue that they are safe to use and that the toxicity of candles is a myth. However, it is important to note that burning any type of candle can release chemicals and particulates into the air, and the risk of toxic emissions is greater when candles are scented or dyed.
Some studies have found that scented candles can release volatile organic compounds (VOCs) and phthalates into the air, which can have negative effects on health. Phthalates, for example, have been linked to learning and behavioural problems, obesity, and impaired development of the reproductive system. Additionally, the fragrance oils used in scented candles, whether derived from natural or synthetic sources, can produce harmful compounds when burned. Limonene, for instance, is toxic at high levels. Furthermore, scented candles can trigger allergic reactions and asthma attacks in some individuals.
However, it is important to note that not all scented candles are created equal, and the level of risk may depend on the specific ingredients and materials used. For example, candles made with natural waxes like soy, beeswax, or stearin (derived from coconut oil or animal fats) are often considered healthier alternatives to paraffin wax candles, as they produce less soot and toxic chemicals. Additionally, choosing candles with wicks made from pure cotton or wood can reduce the risk of harmful emissions.
To minimize potential health risks, it is recommended to choose high-quality candles that do not contain dyes, paraffin, or artificial fragrances. Opting for natural, organic essential oils can help reduce exposure to harmful chemicals. Proper ventilation and following fire safety precautions are also important when burning any type of candle.
While the potential toxicity of scented candles is a cause for concern, there is a lack of conclusive scientific evidence to confirm their harmful effects. Nonetheless, it is always advisable to practice caution and make informed choices when selecting and burning candles to create a safe and healthy environment.
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Candle wicks may contain lead
While there is little scientific evidence to suggest that candles are a danger to your health, there is a concern that burning candles may release harmful chemicals.
Historically, wicks were made with a metal core of lead and zinc. Lead-containing candles are no longer produced due to concerns that fumes could cause lead poisoning, especially in children. Australia was the first country to ban the use of lead wicks, and while most American manufacturers stopped using lead in their candle wicks in the 1970s, some candles, especially older ones, imported products, or those not complying with safety standards, may still contain toxic metals in their wicks.
The risk of toxic emissions is greater when candles are scented or dyed, as artificial fragrances contain VOCs (volatile organic compounds) and phthalates. These chemicals have been linked to a variety of health issues, including learning and behavior problems, obesity, impaired development of the reproductive system, and more. Some essential oils used to scent candles are also toxic to children and pets, and it can be difficult to verify the purity of these products.
To reduce the risk of harmful chemicals in your home, choose candles with wicks made from pure cotton or wood, and opt for natural, plant-based dyes and fragrances. Beeswax, soy wax, and palm wax are considered healthier alternatives to paraffin wax, producing less soot and fewer toxic chemicals. However, it's important to note that any candle, regardless of its composition, can be harmful if not burned correctly. To minimize your exposure to potentially harmful chemicals, follow basic candle safety guidelines, such as trimming the wick, avoiding burning in drafty areas, and ventilating your space after extinguishing a candle.
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Alternatives to candles
Candles can be toxic, especially those made with paraffin wax and synthetic fragrances. Breathing in synthetic fragrance isn’t great for your lungs, cells and hormones. However, there are many alternatives to candles that can be used to create a cosy atmosphere without the potential hazards of traditional candles.
If you are looking for alternatives to scented candles, reed diffusers are a popular option. They offer a longer-lasting fragrance of up to four months to a year, depending on the size of the reed. They are also low-maintenance and only need refilling once the aroma dies down. Electric candle warmers are another option, which melt scented candles from the bottom up to release the fragrance without a flame.
If you are looking for alternatives to the visual ambience of candles, fairy lights can create a similar warm and flickering light. Electric and battery-operated candles can also be used to create a similar vibe without the fire hazard.
If you are looking for natural ways to make your home smell nice, essential oils are a great alternative to scented candles. They can be used with a diffuser to create a steam of pressurised air, which breaks down the oils into tiny particles that are easier to release into the air. High-quality essential oils are made with natural ingredients and can increase energy, improve your mood, and help with things like nausea or fatigue.
Another natural way to make your home smell nice is to simmer a mixture of ginger, cinnamon, lemon, cloves, and star anise on the stove. This creates a natural fragrance in your home and the ingredients can be drunk as a tea or used as a room spray.
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Frequently asked questions
Burning candles can release chemicals, but the science is inconclusive on whether candles are toxic and pose a danger to your health. Some candles, however, may contain harmful chemicals such as phthalates, heavy metals, and petroleum.
Some non-toxic candle alternatives include beeswax candles, soy candles, and vegetable-based waxes.
To reduce the risk of harmful chemicals polluting your air, choose candles with wicks made from pure cotton or wood. Opt for candles made from natural sources and non-toxic candle dyes derived from plants, fruits, and vegetables.
Burning toxic candles can release volatile organic compounds (VOCs) and particulate matter, which may have short-term and long-term negative health effects. Potential health risks include respiratory issues such as coughing, sneezing, or an itchy throat, and even longer-term health conditions like heart disease or cancer.
