Indicate true (T) and false (F) statements below regarding cancer incidence and cancer prevention. Your answer would be a four-letter string composed of letters T and F only, e.g. TFFF.
( ) Over half of all cancers are preventable by lifestyle changes.
( ) The age-adjusted cancer death rates have increased steadily since 1900, mostly due to the industrial way of life.
( ) Currently, more than half of all cancer patients survive at least five years post-diagnosis.
( ) About half of all cancers are thought to arise by infection with viruses, bacteria, or parasites.

Question

Indicate true (T) and false (F) statements below regarding cancer incidence and cancer prevention. Your answer would be a four-letter string composed of letters T and F only, e.g. TFFF.
( )	Over half of all cancers are preventable by lifestyle changes.
( )	The age-adjusted cancer death rates have increased steadily since 1900, mostly due to the industrial way of life.
( )	Currently, more than half of all cancer patients survive at least five years post-diagnosis.
( )	About half of all cancers are thought to arise by infection with viruses, bacteria, or parasites.

Quizplus · Accepted Answer

Except for the increase in cancers caused by smoking, age-adjusted death rates for most common cancers have either stayed the same since half a century ago, or have even declined significantly. Survival rates have also improved: currently, more than two-thirds of cancer patients live more than five years from the time of diagnosis. Fifty percent of cancers could be prevented by changes in lifestyle such as altered smoking, eating, and exercise habits. Only a small proportion of human cancers (perhaps ~15%) are thought to arise from infection.

Indicate True (T) and False (F) Statements Below Regarding Cancer