It's an observational study. It could as well be that persons with conditions that are tied to higher cardiovascular mortality more often do intermittent fasting.
And according to the Heart Association press release (linked in the article) this study didn't even try to avoid confounders: "Factors that may also play a role in health, outside of daily duration of eating and cause of death, were not included in the analysis."
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It's an observational study. It could as well be that persons with conditions that are tied to higher cardiovascular mortality more often do intermittent fasting.
Yep. Correlation does not imply causation.
And according to the Heart Association press release (linked in the article) this study didn't even try to avoid confounders: "Factors that may also play a role in health, outside of daily duration of eating and cause of death, were not included in the analysis."