Coffee is the most consumed psychoactive substance on earth. Over 2 billion cups are drunk every day across the world. But is it actually good for you? The science in 2026 is more nuanced than ever. Studies show that moderate coffee consumption is associated with reduced risk of type 2 diabetes, Parkinson's disease and liver disease. On the other hand, excessive consumption raises cortisol, disrupts sleep and causes dependency. What does the world think?
