What does the passage focus on? [br] [originaltext]Most people think taste buds

Most people think taste buds in the mouth are the reason eating and drinking are a pleasurable (or sometimes repugnant) experience. However, these tiny bundles of nerves are responsible for only part of the show. Taste buds provide just a single-note experience of what we consume.

Researchers argue that public officials must not only eliminate lead sources but improve nutrition and education because studies indicate these measures could reduce lasting ill effects of environmental insults. Still, the common belief that children with low blood lead levels are poisoned or mentally deficient is not only untrue, it can result in hurtful stigma and stress for children and their families.