the church had great influence in ideas about health and medicine in the medieval period
the church taught people that disease was caused by god, the theory of the four humours and also taught Galen's theories because it fit with their ideas
the church controlled medical learning and understanding as they chose which books to copy and redistribute
work and harvests had little time for education and reading to expand their knowledge on disease and medicine
animal dung in the streets and butchery created a lot of dirt in the streets leading to poor health
people were very religious and followed the churches ideas as they were not encouraged to have their own ideas
the church controlled education, especially where physicians were trained. this meant there was a lack of scientific understanding as dissections were mostly illegal
ideas were slow to spread because books were copied by hand and very few people could read
the printing press wasn't invented until 1440
taxes were raised for wars so there was little money to keep the streets clean