Coffee drinkers may have a reason to rejoice as a new study from Tufts University suggests that black coffee consumption is linked to a lower risk of all-cause mortality. The study, published in The Journal of Nutrition, found that the benefits of coffee consumption diminish when additives such as sugar and saturated fat are included in the beverage.
Researchers analyzed data from the National Health and Nutrition Examination Survey (NHANES) from 1999 to 2018, including a sample of 46,000 adults aged 20 years and older. The study categorized coffee consumption based on type (caffeinated or decaffeinated) and the amount of added sugar and saturated fat. Results showed that consuming 1-2 cups of caffeinated coffee per day was associated with a 14% lower risk of all-cause mortality compared to no coffee consumption. However, the same link was not observed for coffee with high levels of added sugar and saturated fat.
Lead researcher Fang Fang Zhang emphasized the importance of understanding the health implications of coffee consumption, given its widespread popularity. The study highlighted that the bioactive compounds in coffee may contribute to its health benefits, but the addition of sugar and saturated fat could negate these advantages.
Consuming at least one cup of coffee per day was linked to a 16% lower risk of all-cause mortality, with a further reduction to 17% at 2-3 cups per day. However, consuming more than three cups per day did not result in additional benefits, and the association with a lower risk of death from cardiovascular disease weakened with higher coffee intake. No significant associations were found between coffee consumption and cancer mortality.
The study also noted that self-reported dietary recall data may have limitations due to variations in food intake, and the low consumption of decaffeinated coffee in the study population could have influenced the results.
In conclusion, the study suggests that black coffee consumption may have positive health effects, but the benefits are diminished when sweeteners and saturated fat are added. Aligning with dietary guidelines that recommend limiting added sugar and saturated fat, this research provides valuable insights into the relationship between coffee consumption and mortality risk.
