A recent study presented at the EPI Lifestyle Scientific Sessions 2024 in Chicago has cast doubts on the cardiovascular benefits of intermittent fasting, a popular dietary trend.
The study focused on the widely practiced 16:8 intermittent fasting, where individuals fast for 16 hours and consume all their calories within an 8-hour window. While intermittent fasting has been celebrated for potential weight loss and metabolic improvements, this new research suggests potential risks associated with the practice.
20,000 adults participating in the US National Health and Nutrition Examination Surveys from 2003 to 2018, researchers found concerning results. Those following the 16:8 intermittent fasting were reported to be 91% more likely to die from cardiovascular disease compared to non-fasters. Additionally, individuals with pre-existing cardiovascular issues faced a 66% higher risk of heart disease and stroke mortality.
These findings contradict previous studies suggesting health benefits linked with time-restricted eating. Among individuals with cancer, those who did not practice fasting and consumed their calories over 16 hours had a lower risk of cancer mortality.
However, the study has limitations. Dietary information relied on two 24-hour recalls, which might not accurately represent long-term eating habits. Moreover, as an observational study, it cannot establish a direct cause-and-effect relationship.
Experts caution against drawing definitive conclusions from these preliminary findings. Dr. Cheng-Han Chen, an interventional cardiologist not involved in the study, highlighted potential biases in participants’ recall of eating patterns and differences in baseline characteristics among fasting groups.
Further research is necessary to fully comprehend the long-term implications of intermittent fasting on cardiovascular health and overall well-being.
-Raja Aditya
