The American Heart Association (AHA) released a news report highlighting a study suggesting an association between an 8-hour time-restricted eating schedule and a 91% higher risk of cardiovascular disease mortality. However, this preliminary finding has not undergone full statistical analysis or peer review, leading to concerns about its validity and the AHA's responsibility in sharing incomplete information.
The study was based on questionnaires from 2003 to 2018 when terms like intermittent fasting or time-restricted eating were not mainstream. This lack of clarity in definitions raises doubts about the accuracy and relevance of the survey results, as both surveyors and respondents may have misunderstood the concepts being measured.
The study sample sizes were small, with only 414 participants in the 8-hour eating window group and 11,831 in the 12-16 hour window group. Relying on participants' recall accuracy over a 15-year period to report their daily eating habits poses significant limitations in the study's reliability and validity.
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