Association of daily sitting time and coffee consumption with risk of all-cause mortality and CV disease.

Summary

• Study Objective: Evaluate the association between daily sitting time and coffee intake and mortality.

• Findings:

  • Sitting >8h/day is associated with higher all-cause and CVD mortality risks.

  • The highest coffee consumption quartile inversely correlated with all-cause mortality.

• Implications: Sedentary behaviour and coffee intake independently impact mortality, with potential protective effects of coffee consumption.

• Recommendation: Further studies are needed to determine optimal coffee consumption for health benefits.

Source: https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-024-18515-9

Detailed Summary

The study aimed to investigate the combined effects of daily sitting time and coffee consumption on mortality risk. Findings revealed that individuals who sat for more than 8 hours per day had increased risks of all-cause and cardiovascular mortality. Conversely, the highest quartile of coffee consumption was associated with a lower risk of all-cause mortality. These results suggest that sedentary behaviour and coffee intake may independently influence mortality outcomes, highlighting the potential protective role of coffee consumption. Further research is warranted to determine the optimal level of coffee intake for maximizing health benefits.

Coffee Consumption & All-Cause Mortality

According to the study, individuals in the highest quartile of coffee consumption had a reduced risk of all-cause mortality compared to non-coffee drinkers, with a hazard ratio of 0.67 (95% CI, 0.54–0.84). This suggests that higher coffee intake is associated with a lower risk of all-cause mortality.

Sedentary Behaviour & All-Cause Mortality

Sedentary behaviour, particularly sitting for more than 8 hours per day, was independently associated with higher risks of all-cause and cardiovascular mortality. The study indicated that prolonged sitting time significantly contributes to adverse health outcomes, emphasizing reducing sedentary behaviour to lower mortality risks.

Limitations

The study has several limitations that need to be addressed. Firstly, daily sitting time was self-reported, which may not reflect actual sitting time accurately. This could introduce bias and affect the results of statistical analysis. Secondly, the impact of specific types of coffee on mortality could not be determined due to missing data, limiting the ability to identify which coffee consumption affects mortality. Lastly, the observational nature of the study using a cross-sectional design makes it challenging to establish a causal relationship between coffee intake, sedentary behaviour, and mortality outcomes. 

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