Answer:
Cancer refers to any one of a large number of diseases characterized by the development of abnormal cells that divide uncontrollably and have the ability to infiltrate and destroy normal body tissue. Cancer often has the ability to spread throughout your body. Cancer cells also fail to undergo programmed cell death, or apoptosis, under conditions when normal cells would (e.g., due to DNA damage). In contrast to normal cells, cancer cells often exhibit much more variability in cell size—some are larger than normal and some are smaller than normal. In addition, cancer cells often have an abnormal shape, both of the cell, and of the nucleus (the “brain” of the cell.) Carcinogens and Cancer Risk.
*Aflatoxins.
*Aristolochic Acids.
*Arsenic.
*Asbestos.
*Benzene.
*Benzidine.
*Beryllium.
*1,3-Butadiene.
While a grade describes the appearance of cancer cells and tissue, a cancer's stage explains how large the primary tumor is and how far the cancer has spread in the patient's body.
Cancer treatments on the horizon
Current treatments. There are many treatments currently available to treat different types of cancers.
Biological therapy.
Hematopoietic growth factors.
Stem cell and bone marrow transplants.
Individual hormonal drugs.
Monoclonal antibodies.
Surgery.
Clinical trials.
Treating cancer is further complicated due to the lifestyle and attitude of patients, the different physiology of people and the rate their bodies will metabolise drugs, the blood supply to the tumour affecting the drug getting into the tumour, the tumour physiology and the fact that the tumour can continue to change.
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