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[Correspondence] Review of Big Fat Surprise should have questioned author’s claims

We coordinate the active Seven Countries Study (SCS) and are investigating lifestyle for potential risk factors in cardiovascular disease across and within cultures with contrasting habitual diet. We were bewildered to read the book review (Aug 19, 2017, p 731)1 of The Big Fat Surprise2 by Nina Teicholz. Stuart Spencer apparently accepts at face value Teicholz’s inaccurate claims of “bias in selecting countries and in selecting data” by SCS originator Ancel Keys—claims refuted in a thorough analysis of the historical record, published in 2017.