See HERE:
https://www.ahajournals.org/doi/full/10.1161/CIRCULATIONAHA.115.017341
Other studies have linked coffee consumption to numerous health benefits, including a reduced risk of cardiovascular disease; Type 2 diabetes; Alzheimer’s and Parkinson’s disease; colon, uterine, and liver cancer; and cirrhosis.
Others have suggested that coffee consumption is linked to bladder and pancreatic cancer and other health issues.
SO, WHICH PARTICULAR STUDY DO WE HEED?
Other studies have linked coffee consumption to numerous health benefits, including a reduced risk of cardiovascular disease; Type 2 diabetes; Alzheimer’s and Parkinson’s disease; colon, uterine, and liver cancer; and cirrhosis.
Coffee reduces iron absorption. Find which of those diseases is associated or caused by excess iron.
Neither. Both are crap “studies”, and worthless.