AIIMS doctor urges to steer clear of one festive gift that can cause cancer

Thinking of gifting your loved one a scented candle for this festive season? Think again, Dr. Priyanka Sehrawat urged. The neurologist, who is an alumna of AIIMS Delhi, explained that scented candles have harmful chemicals such as paraffin wax, benzene, and toluene, which, when ignited, can give rise to toxic fumes in the form of aromatic hydrocarbons, which may make the room smell more pleasant but also act as a form of carcinogen (cancer-causing substance). Several cancers, such as bladder cancer, have been linked to scented candles.

She suggested opting for candles made from plant-based substances or eco-friendly ingredients such as beeswax without synthetic dyes or artificial perfumes, or making candles at home.

If you want to use scented candles nevertheless, she explained, ensure the room is well ventilated so that the hydrocarbons go out.

The Hidden Ingredients Behind the Glow

Scented candles are often used to create a cozy, relaxing atmosphere—but behind their pleasant aroma and soft flicker, there may be hidden health concerns. According to a report by Healthline, many commercially available candles are made from paraffin wax, a substance derived from petroleum—a byproduct of gasoline refinement. When burned, this type of wax doesn’t just produce fragrance and light; it can also release potentially harmful chemicals into the air.

Chemical Emissions from Paraffin Wax

Studies have found that burning paraffin wax can emit substances known as volatile organic compounds (VOCs) and phthalates. These are the same kinds of chemicals found in industrial solvents and household cleaners. Exposure to VOCs in high concentrations is linked to health issues such as headaches, coughing, throat irritation, and shortness of breath. Long-term or repeated exposure may contribute to more serious respiratory problems.

One particularly concerning VOC released during candle burning is formaldehyde, a compound known to increase cancer risk when inhaled in large amounts. However, the good news is that scented candles release these chemicals in quantities significantly below the limits recommended by the World Health Organization (WHO). In most cases, the exposure from occasional candle use remains within safe boundaries.

Do Scented Candles Actually Harm You?

While the presence of these chemicals may sound alarming, current research hasn’t yet established a direct link between scented candle use and long-term health problems. The concentration of harmful substances tends to be minimal, especially in well-ventilated spaces or when candles are used sparingly. Therefore, experts suggest that occasional candle burning is unlikely to cause serious harm for most people.

That said, individuals who are sensitive to fragrances, have asthma, or suffer from allergies may experience mild irritation even at low exposure levels. For them, the chemicals and synthetic perfumes used in candles could trigger symptoms such as sneezing, nasal congestion, or watery eyes.

Allergic Reactions and Sensitivity

Some people develop allergic responses to certain candle ingredients—especially artificial scents or dyes. Common symptoms include sneezing, a runny nose, and sinus blockage, which resemble seasonal allergy reactions. Those with existing respiratory conditions like asthma might notice worsening symptoms when candles are burned in enclosed spaces.