NSES Content Standard F 
Science in Personal and Social Perspectives: Personal health
Grades 5-8, page 168

The use of tobacco increases the risk of illness. Students should understand the influence of short-term social and psychological factors that lead to tobacco use, and the possible long-term detrimental effects of smoking and chewing tobacco.

Benchmark 6E The Human Organism: Physical Health
Grades 6-8, page 145
Toxic substances, some dietary habits, and some personal behavior may be bad for one's health. Some effects show up right away, others may not show up for many years. Avoiding toxic substances, such as tobacco, and changing dietary habits to reduce the intake of such things as animal fat increases the chances of living longer.