The list of countries by coffee consumption shows some of the healthiest countries in the world.
Obviously you could be suspicious of all the studies that show coffee associated with decreased mortality because of Big Coffee's influence, but you'd need remotely plausible way to show any harm at all here. Sugar and tobacco are very different in that regard. People knew in the 1700s that there was an association between tobacco and mouth cancer, and shortness of breath had been observed forever. Once cigarettes made tobacco widely accessible it became even more apparent, though not proven. (Sugar is less obvious but there are lots of anecdotes in history about overconsumption, like Napoleon's wife who had nearly no teeth because of sucking on sugar cane as a child.)
Obviously you could be suspicious of all the studies that show coffee associated with decreased mortality because of Big Coffee's influence, but you'd need remotely plausible way to show any harm at all here. Sugar and tobacco are very different in that regard. People knew in the 1700s that there was an association between tobacco and mouth cancer, and shortness of breath had been observed forever. Once cigarettes made tobacco widely accessible it became even more apparent, though not proven. (Sugar is less obvious but there are lots of anecdotes in history about overconsumption, like Napoleon's wife who had nearly no teeth because of sucking on sugar cane as a child.)