Irregular Meal Timing Linked to Cardiovascular Risk
For men, varying meal schedules between workdays and weekends may impact heart health, according to new research.
Updated on Sept. 24, 2026 in Nutrition
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A study of over 100,000 individuals published in Communications Medicine found that men who frequently shift their meal times between weekdays and rest days face a higher risk of cardiovascular disease. This phenomenon, known as eating jet lag, showed a 14 percent increase in risk for every hour of variation in meal timing.
Why it matters
Human circadian rhythms govern insulin sensitivity and digestive efficiency, and shifting these patterns can disrupt metabolic health. Understanding this link helps highlight how lifestyle consistency may play a role in managing long-term heart health risks.
In a cohort study of over 100,000 people, researchers observed a 14 percent increase in cardiovascular risk for men for every hour of meal time variation between workdays and weekends. The study, published in Communications Medicine, did not find a significant correlation in women.
The players
Inserm
A French public research organization that focuses on biomedical research and public health studies.
INRAE
The French National Research Institute for Agriculture, Food and Environment which contributes to nutritional research.
Sorbonne Paris Nord University
A French research university involved in investigating the links between lifestyle habits and chronic disease outcomes.
The details
The metabolic system functions optimally when meals are consumed on a regular schedule, as circadian rhythms dictate insulin sensitivity and glucose management. When individuals consume food hours past their typical time, it can disturb metabolic rhythm, contributing to insulin resistance and abnormal cholesterol levels. Men, who often carry more visceral fat, may experience more pronounced metabolic disruption from these shifts.
Timeline
September 24, 2026: The study results were published in Communications Medicine.
Health Landscape
This study expands on the Communications Medicine circadian health research portfolio by identifying a specific sex-based variance in how eating patterns impact cardiovascular outcomes. It marks a shift from looking at purely nutritional content toward evaluating how the timing of intake impacts metabolic function.
This research suggests that maintaining a consistent daily schedule for meals may be a factor worth considering for your metabolic health. It is worth discussing with your doctor whether your current eating habits are appropriate given your overall cardiovascular risk profile.
The takeaway
Maintaining consistent meal times throughout the week may support better metabolic rhythm and heart health. If you are concerned about how your dietary schedule impacts your cardiovascular risk, consider tracking your meal times and discussing the findings with your physician.
Further reading
For more on the impact of eating habits, visit the /health/nutrition/ section.
Source note: This article includes information reported by Mumbai Mirror.
Live Poll
Do you worry that your irregular weekend meal habits are negatively impacting your long-term health?
