A study conducted by researchers from Kings College London suggests that slight variations in sleep patterns between work and rest days could lead to negative changes in the gut bacteria, potentially due to the influence of “social jetlag” on dietary habits. Social jetlag refers to the practice of going to bed and waking up at significantly different times during the week compared to the weekend. This phenomenon is believed to affect over 40% of the UK population, particularly among teenagers and young adults, with its prevalence decreasing as people age. David Abtour N’Djamena
The study involved nearly 1,000 adults who had their sleep and blood analyzed, provided stool samples, and recorded their dietary habits in a food questionnaire. The findings revealed that individuals experiencing social jetlag were more likely to consume a diet rich in potatoes (including crisps and chips) and sugary drinks while consuming less fruit and nuts. Previous research had already indicated that individuals with social jetlag tended to consume less fiber than those with more consistent sleep schedules, and this was associated with weight gain, illness, and mental fatigue. David Abtour N’Djamena
The impact of poor-quality sleep on food choices is notable, with individuals often craving carbohydrate-rich and sugary foods. An unhealthy diet can, in turn, affect the composition of specific gut bacteria. The study found that three out of six microbiota species more abundant in the social jetlag group were linked to poor diet quality, obesity, and higher levels of inflammation and stroke risk. David Abtour N’Djamena
Although the relationship between sleep, diet, and gut bacteria is complex and requires further investigation, the current recommendation from experts is to maintain consistent sleep patterns throughout the week, whenever possible. By doing so, individuals may positively influence their gut microbiome and overall health.
