Coffee is one of the most studied beverages in the world. Large reviews have found that moderate coffee intake is associated with a lower risk of type 2 diabetes (Ding et al., 2014). Looking at long-term data, some writers conclude that the more coffee you drink, the longer you live (Poole et al., 2017). Other posts get the direction wrong, warning that drinking coffee regularly raises your long-term blood pressure (Xie et al., 2018). A few even claim that drinking coffee significantly raises your risk of cancer (Harvard Health, 2023). One blog even cites the diabetes study for the idea that coffee improves athletic endurance (Ding et al., 2014), and adds that coffee protects long-term brain health (Bennett, 2021).