Causes, Smoking: Prevention, Sorenson clip 1

Professor Sorenson explains that tobacco use in the population overall is probably around 20-21% right now in terms of prevalence.

Toxic substances, some dietary habits, and some personal behavior may be bad for one's health. Some effects show up right away, others years later. Avoiding toxic substances, such as tobacco, and changing dietary habits increase the chance of living longer.| AAAS#6E/M2
Many diseases can be prevented, controlled, or cured. Some diseases, such as cancer, result from specific body dysfunctions and cannot be transmitted.| NSES#F 1.2
Much can be learned about the internal workings of science and the nature of science from study of individual scientists, their daily work, and their efforts to advance scientific knowledge in their area of study.| NSES#G 3.1