According to the Mayo Institute the most healthy coffee is freshly ground filter coffee as drunk in Northern Europe. I blend four to five different beans depending on availability, use imported German unbleached paper filters and fortunately we have our own un=chlorinated, un-fluorinated water supply. The resultant coffee is delicious.
If coffee has anything to do with life expectancy, according to the World Health Organisation the ranking for Turkey is No. 52 and every country (especially the Northern Europeans) with a tradition for drinking filter coffee has a life expectancy greater than Turkey.