Air pollution, reheated oil and processed food are raising your cancer risk daily

How to prevent cancer: Using fresh cooking oil, limiting processed food, choosing home-cooked meals, and improving indoor air quality can help prevent cancer (Image: Pexels)

• Reheated oils, processed foods, and air pollution may raise long-term cancer risk.
• Repeated exposure triggers inflammation and DNA damage over years.
• Prevention includes fresh oil, less processed foods, and better air quality

Did our AI summary help?

Cancer risk is often linked to genetics or smoking, but the everyday elements of modern living can be just as influential. What you eat, how you cook it, and the air you breathe all interact in ways that affect your cells over years.

Many people underestimate how daily exposures can compound to affect long-term health. Dr Kapil Goyal, Consultant Medical Oncology, RGCIRC, New Delhi, tells Moneycontrol, “Reheating cooking oils, eating processed foods, and chronic exposure to air pollution might seem harmless individually, but together they create a burden on the body that can increase cancer risk.”

These everyday risks are invisible and slow-acting, which makes them easy to overlook. The danger, says Dr Goyal, lies not in immediate effects, but in years of repeated exposure that subtly trigger inflammation, oxidative stress, and damage to DNA, the very processes that can set cancer in motion.

Also read | Do hormonal changes and menopause after 40 increase cancer risk? Oncologist explains

Common causes of cancer

Dr Goyal shares common but hidden contributors to cancer risk:

Reheated cooking oils

Oils heated repeatedly at high temperatures form toxic compounds such as aldehydes and free radicals. Long-term consumption, especially in deep-fried street foods, can damage DNA and impair cell repair.

Processed and ultra-processed foods

Packed with preservatives, refined sugars, unhealthy fats, and additives, processed and ultra-processed foodspromote chronic inflammation, insulin resistance, obesity, and poor gut health—all factors linked to increased cancer risk.

Also read | Harvard-trained gastroenterologist shares 3 foods cancer is afraid of: Broccoli sprouts are one of them

Air pollution

Fine particulate matter (PM2.5)penetrates deep into the lungs and bloodstream, causing oxidative stress and systemic inflammation. City dwellers, traffic-exposed workers, and those near industrial areas face higher cumulative exposure.

Combined impact

“The risk multiplies when these factors coexist. Daily exposure to harmful compounds from food and air can gradually overwhelm the body’s natural repair mechanisms, paving the way for disease,” Dr Goyal explains.

Prevention tips

Dr Goyal suggests using fresh cooking oil, limiting processed food, choosing home-cooked meals, and improving indoor air quality. “These are practical steps anyone can take. Early screening and preventive oncology further help identify risks before they develop into serious conditions,” he adds.

FAQs on Causes of Cancer

What are the common causes of cancer?

Common causes of cancer include genetic predispositions, smoking, and daily exposures like diet and air quality. Over time, these elements can interact and influence cell health.

How does reheating cooking oils increase cancer risk?

Reheating cooking oils forms toxic compounds such as aldehydes and free radicals, which can damage DNA and impair cell repair, increasing cancer risk.

Why are processed and ultra-processed foods harmful?

Processed foods contain preservatives, refined sugars, unhealthy fats, and additives that promote chronic inflammation, insulin resistance, obesity, and poor gut health, all linked to higher cancer risk.

How does air pollution contribute to cancer?

Fine particulate matter (PM2.5) from air pollution penetrates deep into the lungs and bloodstream, causing oxidative stress and systemic inflammation, leading to increased cancer risk.

What preventive measures can reduce cancer risk?

Using fresh cooking oil, limiting processed food consumption, opting for home-cooked meals, and improving indoor air quality are practical steps to reduce cancer risk. Early screening and preventive oncology help identify risks before they become serious.

Disclaimer: This article, including health and fitness advice, only provides generic information. Don’t treat it as a substitute for qualified medical opinion. Always consult a specialist for specific health diagnosis.