Lead exposure can cause which cardiovascular effect?

Lead exposure can cause which cardiovascular effect?

• A. Low blood pressure
• B. No effect
• C. High blood pressure
• D. Increased heart rate

Answer: (C)

Lead exposure is linked to higher blood pressure over time. The best explanation is that lead induces oxidative stress and damages the endothelium, reducing the vessels’ ability to dilate. It also can affect kidney function, altering how the body handles salt and water and increasing blood volume. These effects raise overall vascular resistance and volume, leading to hypertension. So the cardiovascular effect most consistently associated with lead exposure is high blood pressure. Low blood pressure would be unlikely with lead exposure, and while there can be acute changes in heart rate in some situations, the established, longer‑term cardiovascular consequence tied to lead is hypertension.

Lead exposure is linked to higher blood pressure over time. The best explanation is that lead induces oxidative stress and damages the endothelium, reducing the vessels’ ability to dilate. It also can affect kidney function, altering how the body handles salt and water and increasing blood volume. These effects raise overall vascular resistance and volume, leading to hypertension. So the cardiovascular effect most consistently associated with lead exposure is high blood pressure.

Low blood pressure would be unlikely with lead exposure, and while there can be acute changes in heart rate in some situations, the established, longer‑term cardiovascular consequence tied to lead is hypertension.