The latest study features a lot of hazard ratios like that. Digestive diseases and liver cancer were the exceptions, which is why they ended up in headlines. And hey, it's great that coffee seems to have some impact on those conditions. For liver cancer, the hazard ratio got down to an impressive 0.56 for the highest coffee consumer, with a confidence interval of 0.41–0.77, and the results were similar for digestive diseases. But how many people gets digestive diseases or liver cancer? They're pretty rare already, and they're definitely not the common causes of death that most of us have to worry about. And if you're worried about liver cancer, you'd be better off kicking your alcohol habit than you would be drinking more coffee.