Scented candles have become a staple in many homes, adding warmth, coziness, and a delightful aroma. They set the mood for relaxation, self-care routines, or even a romantic evening. However, despite their aesthetic appeal, recent research suggests these candles may have hidden health risks. If you love lighting scented candles, here’s what you should know before striking that match.
While scented candles enhance the ambiance, they also contribute to indoor air pollution, negatively impacting brain function and overall health. A study published in Nature Communications found that burning scented candles releases particulate matter (PM) into the air, leading to brain inflammation.
The research exposed 26 adults to either polluted air from burning candles or clean air for one hour. Afterward, cognitive tests revealed a noticeable decline in selective attention and emotional recognition among those who inhaled the polluted air. This means that scented candles can affect decision-making, concentration, and the ability to recognize emotions in others. Over time, these effects could become more pronounced, leading to long-term cognitive issues.
Other Health Risks of Scented Candles
The dangers of scented candles go beyond brain function. Experts warn that burning these candles releases harmful chemicals, including:
- Aldehydes (like formaldehyde) – These can irritate the skin, throat, lungs, and eyes, potentially causing headaches, allergies, and dizziness. Formaldehyde is also classified as a carcinogen, meaning it has been linked to cancer.
- Volatile Organic Compounds (VOCs) – When fragrance materials burn, they release VOCs such as benzene and polycyclic aromatic hydrocarbons (PAHs), both of which are associated with cancer.
- Particulate Matter (PM2.5) – These tiny particles can enter the lungs and cause respiratory issues, including asthma and heart disease.
- Carbon Monoxide (CO), Nitrogen Oxides (NO), and Sulfur Dioxide (SO2) – These pollutants can contribute to breathing problems and exacerbate conditions like asthma and cardiovascular diseases.
How to Use Candles Safely
If you love scented candles and don’t want to give them up completely, there are ways to minimize health risks:
- Ensure Proper Ventilation – Always burn candles in a well-ventilated area to reduce indoor pollution.
- Choose Natural Alternatives – Opt for candles made from beeswax or soy wax with essential oils instead of synthetic fragrances.
- Limit Usage – Reduce the frequency of candle use, especially in small or enclosed spaces.
- Use Air Purifiers – Investing in a good air purifier can help filter out harmful pollutants released by candles.
Scented candles may charm your home, but they also have potential health hazards. The risks are worth considering, from affecting cognitive function to releasing harmful chemicals. Taking precautions like better ventilation and choosing safer alternatives can help reduce their impact if you can’t part with your favourite candles. Next time you light a candle, remember to balance aesthetics with health for a safer, more mindful experience.
