What are the two leading causes of death in the United States?

Question

BlackTom AI · Accepted Answer

Heart disease and cancer are the two leading causes of death in the United States.

1. Relevant knowledge points and concepts
- Mortality ranking: Causes of death are ranked by the number of deaths attributed to each cause in national vital statistics (CDC/NCHS).
- Chronic disease burden: Cardiovascular disease (heart disease) and malignant neoplasms (cancer) have consistently been the highest-count causes for decades.
- Other conditions (stroke, diabetes, cirrhosis, osteoporosis) occur less frequently as underlying causes of death.

2. Step-by-step reasoning process
- Step 1: Identify authoritative data source — the CDC’s National Center for Health Statistics compiles annual death counts and ranks causes.
- Step 2: Compare annual death totals for major causes. Recent CDC reports show heart disease as the single largest cause, with cancer a close second.
- Step 3: Check each answer option against those ranked totals.

3. Calculations / intermediate steps (using representative recent CDC totals)
- Example (rounded recent-year values): heart disease ≈ 690,000 deaths; cancer ≈ 600,000 deaths.
- Ranking by magnitude: 690,000 (heart disease) > 600,000 (cancer) > other causes (stroke/cerebrovascular disease ≈ 170,000; chronic lower respiratory disease ≈ 150,000; diabetes ≈ 100,000; cirrhosis and liver disease much lower; osteoporosis is not a leading cause of death).
- Thus the top two by count are heart disease and cancer.

4. Why the correct answer is correct
- National vital statistics consistently place heart disease first and cancer second in total deaths per year, making “heart disease and cancer” the correct pair representing the two leading causes.

5. Why the other options are incorrect
- “Diabetes and osteoporosis”: neither is among the top two; diabetes ranks lower (single-digit leading causes) and osteoporosis is not a leading cause of death by itself.
- “Stroke and heart disease”: stroke (cerebrovascular disease) is a major cause but typically ranks below cancer, so stroke + heart disease would not be the top two pair.
- “Cancer and cirrhosis”: cirrhosis (liver disease) causes far fewer deaths than heart disease or cancer and is not the second-leading cause.

6. Conclusion
The correct answer is “heart disease and cancer,” which matches the provided answer.

What are the two leading causes of death in the United States?单项选择题

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