What is the healthiest coffee?

As someone who enjoys a cup of coffee regularly, I'm curious about the healthiest option available. Is there a specific type of coffee that is considered the healthiest? Are there certain factors to consider when choosing a coffee, such as the roast level, the origin of the beans, or the brewing method? And what about the additives, like milk, sugar, and creamer - do they significantly impact the health benefits of coffee? I'm interested in understanding the science behind these questions to make an informed decision about my daily coffee routine.