What can we learn from health advice dated 1733? Surprisingly much

Sami people photo by unknown — This image is available from the US Library of Congress Prints and Photographs division under digital ID ppmsc.06257

In the 18th century the average life expectancy in Sweden was around 35 years for men (in 2020 it is 81 years). The first real hospital in Sweden, intended exclusively for curing diseases, was opened in 1752 in Stockholm. So, is there anything we today can learn from health advice given in the early 18th century?