We know that second-hand smoking increases the risk of lung cancer and studies have suggested that it is associated with lung cancer mortality. But this is the first study to show that second-hand smoking also is associated with lung cancer survival.

Smoking appears to confer a modest elevation in breast cancer risk, ... Certainly this relationship is not as strong as the relationship between smoking and lung cancer or smoking and heart disease, but breast cancer may be another disease to add to the long list of diseases associated with smoking.

The literature has suggested that marijuana smoking increases the risk of head and neck cancer and lung malignancies, and that these tumors tend to develop earlier and behave more aggressively in marijuana smokers.

Although we have refined the common wisdom that excess sun exposure is always associated with increased risk of skin cancer, the take-home message for the public is still the same - limit sun exposure and use a sunscreen that blocks both UVA and UVB rays.

The reason for the strong association with workplace exposure may be due both to the length of time people spend at work and the higher levels of smoke they could be exposed to there.

Studies show that Avastin can prolong the lives of patients with late-stage breast and lung cancer by several months when the drug is combined with existing therapies.