Cancer is a group of diseases characterized by
the uncontrolled growth and spread of abnormal cells. Many factors act together
or in sequence to cause cancer including life style and hereditary. WHO
documents cancers as the leading causes of death worldwide, with approximately
14 million new cases and 8.2 million cancer related deaths in 2012 which is
estimated to rise by about 70% over the next 2 decade.
Data indicates men are more vulnerable to
lung, prostate, colorectum, stomach and liver cancers, while, in women breast,
colorectum, lung, cervix, and stomach cancers were the predominant ones. More than 60% of world’s total new annual
cases of cancer occurrence
are in Africa, Asia and Central and South America accounting to 70% of the
world’s cancer deaths. More than 30% of cancer deaths could be prevented by
modifying lifestyle.
By avoiding key risk factors, like tobacco,
obesity, unhealthy diet and sedentary life, alcohol use, HBV and
HPV-infections, the cancer can be prevented or delayed. About 20% global cancer
deaths and 70% of lung cancer death are primarily caused by tobacco. Also, in
many underdeveloped countries, upto 20% cancer deaths are due to infection by
hepatitis B virus (HBV) and human papillomavirus.
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