Weekend habits that can disrupt blood sugar: ‘Often called social jet lag…’

Weekends often disrupt our usual routines, affecting sleep, meal times, physical activity, and social habits. These changes can have consequences on blood sugar regulation, a phenomenon sometimes referred to as "social jet lag." Our body's glucose metabolism is closely tied to circadian rhythms, regular eating patterns, sleep quality, and physical activity.

Even small disruptions can impact insulin sensitivity, fasting glucose levels, and post-meal blood sugar responses. People with diabetes, prediabetes, or insulin resistance may be particularly sensitive to these effects. The disruption is not limited to the weekend itself; the improvement in insulin sensitivity typically takes a few days to return to baseline, often still affecting Monday and Tuesday.

The most disruptive habits include poor sleep and irregular meal timing, followed by alcohol consumption, especially when combined with late, carbohydrate-heavy meals. Refined carbohydrates and prolonged sitting also exacerbate these effects. However, people with prediabetes or diabetes may experience a delayed recovery from these disruptions.

To maintain stable blood sugar during weekends, maintaining a similar wake-up time to weekday times, staying active after meals, and returning to normal routines on Monday are recommended. Light physical activity after larger meals can help reduce post-meal glucose spikes, and alcohol should be consumed with food and avoided on an empty stomach, especially late at night.