Context: Diarrheal disease may have a negative impact on both physical fitness and mental development. "Early childhood malnutrition resulting from any cause reduces physical fitness and work productivity in adults," and diarrhea is a primary cause of childhood malnutrition. Further, evidence suggests that diarrheal disease has significant impacts on mental development and health; it has been shown that, even when controlling for helminth infection and early breastfeeding, children who had experienced severe diarrhea had significantly lower scores on a series of tests of intelligence.

Question: Diarrheal disease has what effects on a person?
Answer: a negative impact on both physical fitness and mental development

Question: What can early childhood malnutrition cause?
Answer: reduces physical fitness and work productivity in adults

Question: What is the cause of childhood malnutrition?
Answer: diarrhea

Question: Children who have experienced sever diarrhea are more likely to have what effect?
Answer: significantly lower scores on a series of tests of intelligence

Question: What causes children to have low scores on physical fitness tests?
Answer: Unanswerable

Question: What reduces mental development and productivity in adults?
Answer: Unanswerable

Question: What does evidence show that helminth disease impacts?
Answer: Unanswerable

Question: What disease has a negative impact on intelligence?
Answer: Unanswerable

Question: What are children who acquire helmenth infection are more likely to have?
Answer: Unanswerable