PRESS RELEASE - A team of researchers from INRAE, Inserm, Sorbonne Paris Nord University, Université Paris Cité and the CNAM has published the first study exploring the association between eating jetlag and the risk of cardiovascular disease. Eating jetlag refers to the difference in the timing of meals between weekdays—when mealtimes are often shaped by work schedules—and weekends or days off. This shift in eating patterns may disrupt the body’s biological rhythms and could have implications for cardiovascular health. Researchers analysed data from more than 100,000 participants in the NutriNet-Santé cohort over a 14-year follow-up period. Their findings, published in Communications Medicine, suggest that each additional hour of eating jetlag was associated with a 14% higher risk of cardiovascular disease in men and a 21% higher risk of coronary heart disease. They did not observe any significant association in women. These findings suggest that discrepancies in mealtimes between weekdays and weekends may play a role in the onset of cardiovascular disease.