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In a recent paper Dr Messerli1 reported a strong correlation between a nation's chocolate consumption with the country's prowess in winning Nobel prizes per capita (see Carphology, in this issue). Messerli speculated that flavonoids within chocolate may contribute to this link by improving cognitive function—while recognising a correlation does not establish causation. However, chocolate is not usually consumed on its own, often being combined …
Contributors SL found the data, performed statistical analysis and produced the graph. GNF drafted and revised the paper.
Competing interests Milk taken with cereal; SL with coffee. Chocolate taken anytime. GNF co-edits Practical Neurology.
Provenance and peer review Not commissioned; internally peer reviewed.
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