How Cancer Begins - 抗癌

ABOUT THE LECTURE:
If you’re worried about getting cancer, do yourself a favor: steer clear of
red meat and rich foods, and avoid cigarettes. In this lecture, Robert
Weinberg provides the scientific basis for this commonplace advice, as well
as a layman’s look at the genetic, biochemical and environmental factors
that make good cells go bad.

Normal cells are civic-minded, lining up together in a precise architecture
that gives structure to body tissue. When the cell’s genes are damaged, they
send out faulty instructions, turning orderly structure into a chaotic mess.
This kind of injury to cells likely comes from the outside – as many as 90%
of human cancers are due to bad diets and smoking. Weinberg wants to
understand the specific pathways by which the cells’ enemies invade and do
their damage, in hopes of then being able to halt the process and freeze a
cancer’s growth. But, cautions Weinberg, better to count on prevention than
a cure in the fight against cancer.

http://mitworld.mit.edu/video/151/

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