Your right. I shouldn't have said "exclusive". I shouldn't be posting when I'm sick. Mea culpa.
Instead, what I should have said is, cancer rates are significantly higher in "western" countries and certain kinds of cancers have seen dramatic increases, such as breast cancer[1] and prostate cancer[2], as countries have "westernized". As countries westernize, rates of these cancers increase.
Japan is basically Eastern genetics with Eastern diet and Western medicine, right? And a few very "Western" cultural trends (lots of work/high stress, smoking, etc.).
(The irony is that smoking is more on the rise in Asia/etc. than elsewhere, so at some point smoking and related illness will be a non-Western thing, too.)