A SYSTEMATIC REVIEW ON THE EMERGING CANCER CONDITION IN WORLDWIDE

Abstract

This review paper provides an update on the burden of global cancer by estimating the
mortality rates and incidences. Cancer is one of the main causes of morbidity and mortality
globally. It is considered that by 2020, the rate of the new cases of cancer will raise to more
than 15 million, including death raising to 12 million. The burden of cancer incidence and
mortality will increase worldwide. When in the United States and many other western
countries, the most cancer incidences and mortality rates for most cancers (with colorectum
cancer, breast cancer, lung cancer and prostate cancer) are declining, and then in the several
less developed and economically transitioning countries, those are developing. The reasons
for increasing in the less developed and economically transitioning countries are the
acceptance of unhygienic westerly lifestyles such as smoking, taking tobacco, taking alcohol,
deficiency of exercise, industrial exposures, physical inactivity etc. Already in some of these
countries, the rates for colon and lung cancers have surpassed. The most developing countries
are getting affected by cancer related to infectious agents, such as liver, stomach, and cervix
cancers. In this review, we discuss the incidence and mortality of this changing world for
selected common cancers and the potential for cancer prevention in developing countries.