Young Patients in Delhi Diagnosed with GI Cancer Amid Pollution Concerns

In a worrying development, healthcare professionals in Delhi are diagnosing gastrointestinal (GI) cancer in patients as young as 15 years old. This trend has led experts to investigate the potential links between rising air pollution levels and cancer incidence among younger populations.

Recent findings presented at an international conference on colorectal and GI cancers, organised by Sir Ganga Ram Hospital and the UK's The Christie NHS Foundation Trust, brought attention to the alarming increase in cases. Experts emphasised the need for India-specific research to explore how environmental factors, particularly air pollution, may be linked to the growing number of GI cancer diagnoses.

Dr D S Rana, Chairman of the Trust Society at Sir Ganga Ram Hospital, highlighted the importance of international collaboration. He remarked, “Cancer is a complex challenge that requires coordinated efforts across institutions, specialities and countries.” This partnership aims to facilitate advancements in cancer research, enhance early diagnosis, and improve patient outcomes.

Dr Shyam Aggarwal, chairperson of the Department of Medical Oncology at the hospital, pointed out that new patients with GI cancer are being seen at unprecedented ages, stating, “In our outpatient department, we are now seeing new GI cancer patients as young as 15 years old, which was uncommon five years ago.” He urged for increased focus on environmental influences, indicating that both public awareness and research must extend beyond traditional risk factors such as tobacco and diet.

The conference also spotlighted the need to study ground-level ozone alongside other pollutants like particulate matter (PM2.5). Dr Aggarwal noted that although PM2.5 is widely discussed, ground-level ozone poses a significant but less recognised risk. He added, “We need more India-specific evidence to understand the contribution of these pollutants, particularly in cities with persistently poor air quality.”

Scientific literature supports the idea that air pollution may contribute to cancer risk. A recent study published in Epidemiologic Reviews indicated that long-term exposure to PM2.5 correlates with increased mortality rates from GI cancers, especially colorectal cancer. Another study in Nature Health assessed the cancer burden associated with ambient air quality, linking exposure to pollutants such as PM2.5 and nitrogen dioxide to an elevated overall cancer risk, although it did not specify GI cancers definitively.

Ground-level ozone, formed by airborne chemicals reacting under sunlight, presents a distinct danger because its levels can rise during warm weather. Experts call for continuous monitoring to better understand its health implications.

Dr Saumitra Rawat, Chairman of the Department of Surgical Gastroenterology at Sir Ganga Ram Hospital, underscored the need for comprehensive investigations into early-onset cancers. He noted, “Family history, genetic susceptibility, diet, lifestyle, infections and possible environmental exposures all deserve appropriate consideration.”

Union Health Secretary Punya Salila Srivastava addressed the conference, emphasizing that tackling the growing cancer burden demands a focus on prevention, early diagnosis, public awareness, and equitable access to quality healthcare.

The rising instances of GI cancer in younger patients form part of a larger trend that raises significant public health concerns. Moving forward, further investigation is crucial to elucidate the complexity of cancer development in the context of environmental exposure, ensuring better preventive measures can be established to protect future generations.