Which of the following is an uncontrollable primary risk factor for cardiovascular disease?

Question

BlackTom AI · Accepted Answer

Age is a nonmodifiable (uncontrollable) primary risk factor for cardiovascular disease because it cannot be changed and risk increases with advancing years.

1) Relevant knowledge points and concepts
- Primary risk factors for cardiovascular disease are those that independently raise the likelihood of developing heart disease. They fall into two categories: nonmodifiable (uncontrollable) and modifiable (controllable).
- Common nonmodifiable risk factors: increasing age, male sex, and family history/genetics.
- Common modifiable risk factors: cigarette smoking, physical inactivity, high blood pressure, high cholesterol, diabetes, obesity, poor diet, and excessive stress (to the extent it can be managed).

2) Step-by-step reasoning
- Compare each answer option against the definition of “uncontrollable”: if the factor can be changed by behavior, treatment, or environment it is controllable; if it can’t be changed, it is uncontrollable.
- Option b: Age — cannot be changed by behavior or treatment; risk of cardiovascular disease increases with older age. Therefore age is uncontrollable.
- Option a: Physical inactivity — this is a behavior that people can change through exercise programs, so it is controllable.
- Option c: Stress — many aspects of stress are modifiable through coping strategies, therapy, lifestyle changes, and medication; thus it is considered controllable or at least partially controllable.
- Option d: Cigarette smoking — clearly a behavior that can be stopped with interventions, so it is a modifiable risk factor.

3) Calculations/intermediate steps
- No numeric calculations are required; determination is categorical (modifiable vs nonmodifiable) based on whether the factor can be altered.

4) Why the correct answer is correct
- Age is inherently nonmodifiable; as people get older their cumulative exposure to other risk factors and vascular changes increase cardiovascular risk. Medical guidance consistently lists age as an uncontrollable primary risk factor.

5) Why other options are incorrect
- Physical inactivity, stress, and cigarette smoking are all behaviors or conditions that can be changed with interventions (exercise, stress management, smoking cessation), so they are modifiable, not uncontrollable.

Conclusion: The correct answer is b. Age, which matches the provided answer.

Which of the following is an uncontrollable primary risk factor for cardiovascular disease?单项选择题

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