Which type of chemical hazard is described as substances that can cause cancer?

• A. Carcinogens
• B. Mutagens
• C. Neurotoxins
• D. Endocrine disruptors

Answer: (A)

Carcinogens are substances that can cause cancer. They promote cancer by damaging DNA or by altering how cells regulate growth, which can lead to uncontrolled cell division and tumor formation. Cancer arises from genetic and epigenetic changes, so agents that increase the likelihood of these changes are labeled as carcinogens. Some carcinogens damage DNA directly (genotoxic), while others promote cancer through non-genotoxic pathways such as inflammation or hormonal effects.

Mutagens are agents that cause genetic mutations; many mutagens can be carcinogenic, but a mutagen isn’t defined solely by its ability to cause cancer. Neurotoxins primarily affect the nervous system and aren’t described by cancer-causing potential. Endocrine disruptors interfere with hormonal signaling; they can influence cancer risk in hormone-sensitive tissues but are not themselves defined as cancer-causing hazards in the broad sense.