Which risk factor for heart disease is present in this patient?

• A. Smoking
• B. Hypertension
• C. Diabetes
• D. Elevated cholesterol

Answer: (A)

Smoking is a major risk factor for heart disease because it damages blood vessels and promotes a process that narrows and stiffens arteries. The chemicals in tobacco, especially nicotine and carbon monoxide, set off a chain of effects: they raise heart rate and blood pressure, make the blood more likely to clot, and reduce the blood’s ability to carry oxygen. They also damage the inner lining of arteries and foster inflammation and plaque buildup, accelerating atherosclerosis. This combination increases the likelihood of a heart attack or other cardiovascular problems.

If the patient actually uses tobacco, that specific risk factor is present and highly significant, even if other factors like high blood pressure, diabetes, or high cholesterol are not clearly identified in this individual. Smoking is particularly important to address because it is modifiable; quitting reduces risk over time, improving outcomes and often reversing some of the vascular damage with sustained abstinence.