The author is Andrew G. Levy and the topic is migraine headaches:
Even more remarkably, triggers seem to be culturally particular. French migraine researchers, testing a French population, found widespread complaints about white wine and chocolate. British researchers, testing their own countrymen and women, found red wine and cheese to be the more potent triggers. Such anomalies might point to flaws in the studies, but more likely, they point to something mysterious about the human temperament that migraine reveals. It's not the chemical in the wine that triggers the migraine generator, but something else inside the wine entirely, something in what the wine means to the drinker — something that might change by region, by individual, by culture, that simply obliterates the border between the somatic and the psychosomatic.
The subtitle is A Migraine Diary and you can buy this very interesting book here. Levy outlines his struggle with migraines, their possible roots, and what they reveal about the broader human condition. According to Levy, Asians and African-Americans are less prone to migraines and the differences may be partly genetic in origin.