This discussion is based on the question above, but with the condition of all of them surviving until their respective body gives up, considering the effects of what they eat/drink/…
Here are my bets
Which Straw Hat 'would' die first?
Here are my bets
Luffy will be imo the first one that dies, as he lost 20 due to the side effects of Iva-san's DF [that was used 2 times, and it takes 10 years of the respective person, each time it's used] and further several years due to the enourm side effects of Gear Second and Gear Third...
Which Straw Hat 'would' die first?