-Scientific knowledge and progress in medical sciences has
increased lifespan of humans worldwide.
Knowledge helped us to eradicate small pox in the world and recently our
country is declared polio free. Healthy
life style can prolong life considerably.
But if health principles are not followed aged life can get burdensome
with disease.
World over cancer incidence is increasing as people are
adopting risky life styles. According to
the statistics by International Agency for Research on Cancer 14 million new
cancer cases were added and 8.2 million died of cancer in 2012, where as in
2008 the number was 12.7 million and 7.6 million respectively. It is estimated that this will rise to 21.6
million new cases and 13 million cancer deaths per year by 2030. The study also found that there is increase
in cancer in woman.
Most common cancers worldwide
are
-Lung cancer
-Breast cancer
-Colorectal (large intestine) cancer.
The cancers causing highest deaths are lung, stomach and
liver.
All cancers afflict world population, but certain cancers
are more common in some countries due to environmental and socio-cultural
practices. Cervical cancer is high in Columbia
and low in Japan. Stomach cancer is very common in Japan
and low incidence in US.
Cancer is caused by multiple factors.
Tobacco consumption in any form – smoking or chewing is
related to cancer of mouth, throat, lungs, esophagus, and also of bladder,
pancreas and kidneys. 91% of oral
cancers are directly related to use of tobacco.
Alcohol – excess intake is associated with esophagus and
liver cancer. Alcohol and tobacco have a
synergistic effect in causing cancer.
Infections, particularly certain viruses are found to be
associated with certain cancers.
-HPV – in cancer cervix, HIV- lymphoma, EBV in lymphoma and
nasopharyngeal carcinoma, CMV in Kaposi’s sarcoma, Hepatitis B and C associated
with liver cancer.
Dietary factors like smoked fish is linked to stomach cancer
and excessive consumption of red meat and beef is related to intestinal cancer
and high fatty diet is associated with breast cancer.
Certain environmental and occupational factors like
pollution, exposure to asbestos, arsenic, cadmium etc, exposure to pesticides
and radiation are recognised as cancer causative agents.
Genetic factor is known in woman having breast cancer. A certain gene BR Ca 1 and BR Ca 2 inherited
from mother predisposes woman to breast cancer and ovarian cancer.
In India
the number of women suffering from cancer is higher than men. It is also found that the cancer cases
diagnosed in women is a million more in 2013 compared to that in 2012. The increase in breast cancer is 20% and
deaths due to cancer 14%.
In India
cervix (part of uterus) and breast cancer accounts for 60% of all cancers
afflicting women.
Prevention: Certain
cancers which are known to be caused be viruses can be prevented by
vaccination.
-HPV vaccine to prevent cervical cancer and hepatitis
vaccine to prevent liver cancer caused by the virus.
-Avoiding early teenage sexual activity and multiple
sexual partners and taking reproductive health care will bring down cancer
cervix in woman. Also breast feeding and
low fat diet removes environmental causes resulting in breast cancer in woman.
-Abstaining from tobacco and restricting the alcohol
consumption decreases the incidence of cancer, particularly lung cancer in men
which is the cause of highest cancer deaths.
Screening: Screening
all woman who are sexually active for cancer cervix will bring down the
incidence and deaths due to cancer cervix.
Screening for oral cancers in tobacco users also reduces the
incidence of oral cancer.
Early diagnosis: Present day with availability of medicines and technology
early diagnosis of cancer will result in cure.
Any person having the following conditions should immediately consult
appropriate specialist and undergo evaluation.
-Persistent fever
-Unexplained loss of weight
-Change in the voice – hoarseness of voice, persistent cough
-Change in bowel habits, constipation and diarrhea
alternating
-Impaired appetite
-Change in a mole or wart
-Any lump anywhere or any ulcer that does not heal
-Spit or vomit having blood or passing blood in stools,
blood in urine
-Irregular menstrual bleeding or increased white discharge
or thin blood stained watery discharge and post coital bleeding in woman
- Lump or hardness in the breast or retraction of the nipple
in woman.
Cancers incidence can be reduced by healthy life style and
clean environment, getting vaccinated that are available. Those cancers that cannot be prevented if
diagnosed early can be cured and will be compatible with healthy long life.