PAHs are commonly associated with which health risk?

PAHs are commonly associated with which health risk?

• A. Allergic reactions
• B. Carcinogenicity
• C. Neurotoxicity
• D. Acute irritation

Answer: (B)

Polycyclic aromatic hydrocarbons (PAHs) are most strongly linked to cancer risk because many of them can be metabolically activated in the body to reactive compounds that damage DNA. When PAHs are inhaled or ingested, enzymes in the liver and other tissues convert them into reactive metabolites. These metabolites bind to DNA, forming adducts, which can cause mutations during cell replication. Over time, these mutations can initiate cancer, and this is why PAHs are widely recognized as carcinogens. Benzo[a]pyrene is a well-known example that illustrates this mechanism. While PAHs can contribute to other toxic effects, the cancer risk is the health outcome most commonly associated with exposure. PAHs originate fromIncomplete combustion processes such as vehicle exhaust, cigarette smoke, and charred foods, which helps explain why air pollution and occupational exposures are concerns for carcinogenic risk.

Polycyclic aromatic hydrocarbons (PAHs) are most strongly linked to cancer risk because many of them can be metabolically activated in the body to reactive compounds that damage DNA. When PAHs are inhaled or ingested, enzymes in the liver and other tissues convert them into reactive metabolites. These metabolites bind to DNA, forming adducts, which can cause mutations during cell replication. Over time, these mutations can initiate cancer, and this is why PAHs are widely recognized as carcinogens. Benzo[a]pyrene is a well-known example that illustrates this mechanism. While PAHs can contribute to other toxic effects, the cancer risk is the health outcome most commonly associated with exposure. PAHs originate fromIncomplete combustion processes such as vehicle exhaust, cigarette smoke, and charred foods, which helps explain why air pollution and occupational exposures are concerns for carcinogenic risk.