which president smoked cigarettes Gerald Ford, the Pipe Smoking Pipes & Presidents: Legendary Stories

Understanding the difference between casual use, medical necessity, and dependency is key

Some individuals were affected by more than one disease

PHOTO: AP "An official letter will be sent to the Mexican federation underlining that neither the coaches nor anyone else on the sidelines is allowed to smoke," added Siegler

Frank and Seelye, both recognized experts on the topic, has been years in the making, and is by far the most comprehensive work ever done on the subject

Children, the elderly, and people with compromised immune systems, in particular, are at risk of developing health conditions

Enzyme-formulated air fresheners break down smoke smells at a molecular level