[Campbell Biology P.951] The text states that after folic acid supplementation became standa... | Practice Question

The text states that after folic acid supplementation became standard in the United States, the frequency of neural tube defects dropped to an average of just one in 5,000 live births. Which of the following best explains the broader public health significance of the Smithells study and the subsequent policy?

  • A: It demonstrated that complex surgical procedures are the most effective way to address birth defects.
  • B: It proved that all forms of malnutrition lead to neural tube defects, necessitating widespread vitamin supplementation for all nutrients.
  • C: It highlighted how targeted nutritional interventions based on scientific research can significantly improve public health outcomes.
  • D: It suggested that genetic factors, rather than dietary ones, are the primary cause of neural tube defects.

Explanation

The study and subsequent policy showed that a simple, targeted dietary intervention folic acid supplementation based on scientific findings could dramatically reduce a significant birth defect, demonstrating the power of public health initiatives.