Benchmark 6E
The Human Organism: Physical Health
Grades K-2, page 144

Some things people take into their bodies from the environment can hurt them.

NSES Content Standard F 
Science in Personal and Social Perspectives: Personal health
Grades K-4, page 140
Different substances can damage the body and how it functions. Such substances include tobacco, alcohol, over-the-counter medicines, and illicit drugs. Students should understand that some substances, such as prescription drugs, can be beneficial, but that any substance can be harmful if used inappropriately.