I definitely think so. Consider Indonesia. These Malays (shortest and thinnest people in the world) are doing everything they can in the fight against flatback posture (they smoke, drink coffee, eat very spicy food -see the Blade Runner film for a detailed exposition). Those who fail, die. They lean strong bicam, and their people and their genetics prefer to keep it that way. Nevertheless, they are still succumbing to that infamous Tim McVeigh/Sola Aoi posture bc of smartphones (this is hyperflexed, not flatback, so instead we see a rise in pro-muscle transgenderism -quite unlike flatback transgenderism, which is anti-muscle, famously exemplified by Amanda Lear).
Most other countries are much more adapted to the breakdown of bicam (most adapted has to be Spain, or maybe Israel bc high TFR -see writing direction theory re: Israel). Bolivia would be in the exact same situation if it were not for the thin air.
Aug 16, 12:35am: Bolivia is very, very similar to Indonesia, the only difference being the mountains. So instead of extreme schizophrenia we just get higher obesity. Both obesity and schizophrenia are obvious postural comps.
Aug 16, 1:04am: Spain actually is one of the least schizophrenic countries. But Greece (see my repeated references to ancient Greece) and the two settler-colonies of Iceland and Australia are lower.
Aug 16, 1:06am: Unsurprisingly, Israel is right next to Spain.
Sep 15, 1:28pm: Both Koreas are now independent. And microchip writing by the Russo-Chinese alliance:

Sep 15, 1:31pm: North Korea does not work like the movies say it does. Japan works like North Korea, but in secret.
Sep 15, 4:34pm: Will flatback posture be confirmed as the primary cause of schizophrenia by 2030? → Will flatback posture be confirmed as the primary cause of schizophrenia by 2030?