The relatively stable medieval society that followed it benefited from less variable climatic conditions. (newscientist.com)
The fragility of medieval society required the elimination of heretics. (firstthings.com)
Peasants were the most malnourished in medieval society but everybody in medieval times had a shorter lifespan in general because there was no sanitation systems, absolutely zero understanding of medical science and lack of clean water. (brandnewvegan.com)