China seems to follow the general male/female trend. As you can see the colors are defined differently in the two maps.
In Africa there isn't just this reverse trend but there is a contrasting population surrounding the hole. Even similar populations of displaced Africans, in the Caribean and elsewhere (not the African Americans) where the population is jungle thick, exhibit
steep trends in what seems to be "unpenetrated" areas. It is rare that such areas encompass an entire country. Part of this may be a susceptibility to cervical cancer but that's not genocide.
Eastern Europe has a large number of lung cancer deaths in males. Otherwise the Ukraine and select surrounding populations have a very low rate of cancer. Some of these countries paid for the institutionalization of incurable insanity during WW2. I would not be surprised to see a link between a cancer and mental deficiency.
Some of this data may be off the mark on several counts. Data shows, historically, reported figures have swung wildly between extremes.
Cancer is a funny thing. The cancer cells have DNA missing, particular fragments that other cells have. What difference this makes or why these regions are deleted in very specific cancers?
From the gene data, the global cancer statistics, historical records and photographs of gene pool entrants, my own clandestine epidemiological investigations and some figurin' and reconin':
The sonic hedgehog locus plays a part in enviro-sensitive cancers. Particularly lung/oral/esophageal/pharynx cancers (they may be an over lap) seem to have a variety of deletions but seems to be the
same set of deletions. There seems to be an aggravating effect induced by cigarettes, but also plain old tobacco. Nicotine itself is a poor carcinogen.
The genes on the sonic hedgehog locus I suspect are responsible for these types of cancers are in the gimap series. The 7 or so gimap proteins hold the genes together. A defect in these proteins would result in DNA being lose in the nucleus, exposing it to damage. When damage does occur the site is excised from the chromosome.
Individuals like George Custer tend to escape notice. Partly because the SSH locus produces a variable dysmorphia that often mild. Thus there may not be resemblance between individuals. ie Ariel Sharon, George Custer, the guy who had Lincoln shot:

and this guy in found in East Africa

or slave runners daughters
or the armless Brazilians.
The mentality is the same. And so are the cancers.