People don't tend to survive on a raw diet, in the evolutionary sense. I don't see anything scientific at the moment (because studying diet is hard + pre-coffe

People don't tend to survive on a raw diet, in the evolutionary sense. I don't see anything scientific at the moment (because studying diet is hard + pre-coffee apathy), but an internet search for "raw food menstruation" indicates that the most common next word is "stops". "Survival," in the evolutionary sense, doesn't just mean "living into old age" but "reproducing successfully", which paused menses preclude.