Which of the following pollutants can cause cancer in humans?

NHM UP Staff Nurse - 2016

Community Health Nursing

Easy

Appeared in: NHM UP Staff Nurse - 2016

Explanation

Pesticides are a diverse group of chemicals, and several have been identified as carcinogenic.
Chronic exposure to certain pesticides, such as organochlorines and glyphosate, is linked to an increased risk of cancers, including non-Hodgkin lymphoma.
The International Agency for Research on Cancer (IARC) classifies some pesticides as known or probable human carcinogens.
Mechanisms of carcinogenicity can include causing DNA damage, hormonal disruption, and oxidative stress.

Option A: Mercury's primary toxic effects are on the nervous system (neurotoxicity) and kidneys (nephrotoxicity). It is not primarily known as a carcinogen in humans.
Option B: Lead is a well-known neurotoxin that particularly affects children's brain development. It also causes anemia and kidney damage. While there is some limited evidence, it is not primarily classified as a human carcinogen compared to pesticides.
Option D: Ozone is a major component of smog and is a powerful respiratory irritant. It can trigger asthma attacks and reduce lung function but is not classified as a carcinogen.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain The concept tested is the identification of carcinogenic environmental pollutants and their specific health risks as background academic context rather than a clinical decision trigger.
Nurses play a crucial role in taking a thorough environmental and occupational history. Asking patients, especially agricultural workers or those living in rural areas, about potential pesticide exposure is vital for a complete assessment.
Patient education is a key nursing intervention. This includes teaching about the risks of pesticide exposure, the importance of using personal protective equipment (PPE), washing produce thoroughly, and considering organic options to reduce dietary exposure.
What if? If a patient who is a farmer presents with unexplained fatigue, weight loss, and swollen lymph nodes, the nurse should recognize these as potential signs of lymphoma and ensure the patient's occupational history of pesticide exposure is highlighted to the healthcare team for prompt investigation.

How to Approach the Question

First, identify the core of the question: it asks to link a specific type of pollutant to cancer.
Analyze each option by recalling its primary health effect.
Recall that Mercury and Lead are heavy metals known primarily for their neurotoxic effects, especially on the developing brain.
Remember that Ozone is a gas associated with air pollution and primarily causes respiratory issues like asthma.
Recognize that 'Pesticides' is a broad category of chemicals used in agriculture, and some of these have been scientifically linked to cancer.
Conclude that pesticides are the most accurate answer among the choices for a pollutant that can cause cancer.

Concept Tested & Keywords

Concept Tested: The concept tested is the identification of carcinogenic environmental pollutants and their specific health risks.
Stem keywords: pollutants, cancer, humans
Lead-in keywords: Which

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