Lung cancer: 6 everyday objects that are harmful to your health | June 24, 2025

Cancer is undoubtedly one of the most feared diseases. Its origins can be diverse: abnormalities of the immune system, genetic factors, or our daily environment, which can play a key role. Heavy metals, ultraviolet radiation, and various carcinogens can insidiously invade our bodies, causing cell mutations and paving the way for cancer.

We tend to think we just need to close the door and wash our hands, but our homes can be full of carcinogens. Let’s take a look at six everyday items that contain pollutants and should protect ourselves from.
Scented candles and air fresheners

Scented and deodorizing candles are often used to improve the atmosphere of enclosed spaces such as bathrooms or to mask unpleasant odors and contain harmful substances such as limonene and phthalates.

Although limonene is harmless in its pure form and known for its lemon scent, it can convert to formaldehyde, a carcinogen, when released into the air. Formaldehyde can cause inflammatory reactions, hepatotoxicity, lung and breast cancer, and can affect pregnant women and fetuses with prolonged exposure.

The phthalates contained in scented candles prolong the fragrance’s diffusion, but they are endocrine disruptors. Excessive exposure can lead to hormonal disruption, increase the risk of liver cancer, and affect pregnant women and fetuses.

Burning scented candles in the home, especially in the bedroom, can increase carbon monoxide levels, leading to dizziness, headaches, and nausea. Use these products in moderation and remember to ventilate your home frequently.
Humidifier

Humidifiers have become indispensable for humidifying overly dry air, both in summer and winter. However, questions remain about their safe use, especially in the bedrooms of young children.

A study found that both tap water and purified water used in humidifiers contain microorganisms after one night. Humidifiers promote bacterial growth due to the stagnant water they contain.

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