Abstract
Assuming that present trends continue, about 30,000 persons in California will be dying from cancer each year by the early 1970's. This expectation takes into account both changes in the size and other characteristics of the population, and changes in cancer mortality rate—increases in some sites and decreases in others, according to the 1950-1960 trends.
On the other hand, if everything now known to avoid cancer deaths were actually done, conservative estimation indicates that each year at least 7,500 of the 30,000 expected cancer deaths (based on the trends of 1950-1960 and taking into account present accomplishment as well as failure) would not occur. Possibly many more deaths could be avoided.
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