My impression is that staying together as a couple does not correspond to the challenges themselves, but whether the very idea of breaking up is an option on the table. If it is, then some people take it. If it's not, then they will keep working at it. You must know people who were terribly suited who make it work. And there are couples who seem perfectly suited that break up. It's a mystery to everyone.
Jonathan Safran FoerWe could imagine all sorts of universes unlike this one, but this is the one that happened.
Jonathan Safran FoerElsewhere the paper notes that vegetarians and vegans (including athletes) 'meet and exceed requirements' for protein. And, to render the whole we-should-worry-about-getting-enough-protein-and-therefore-eat-meat idea even more useless, other data suggests that excess animal protein intake is linked with osteoporosis, kidney disease, calcium stones in the urinary tract, and some cancers. Despite some persistent confusion, it is clear that vegetarians and vegans tend to have more optimal protein consumption than omnivores.
Jonathan Safran Foer