Difficult question this, by prehistoric, I guess you mean before we had the written word? Surely there are similarities? Aboriginal culture is passed on verbally, by the telling of stories passed down through the generations.They were hunters and gatherers, so being nomadic they were quite healthy, they ate fresh food and exercised. Medical problems were more about broken bones, cuts etc., rather than disease. Living in small groups, diseases like measles were not a problem because they require large populations.