Unfortunately, despite being freed, the experiences and trauma that Hancock went through corrupted her innocence, and she would later grow up to distrust everyone with the exception of her sisters , men especially.
Luffy pulled himself toward Arlong and punched him with a variety of attacks that inflicted minor damage.
So it goes without saying that more advanced techniques that Luffy might master in the future will affect his lifespan as well, possibly to a greater extent.