Should future pigs roll in the mud again?

Increased hygiene and a lack of exposure to various microorganisms may be affecting the immune systems of many populations – particularly in highly developed countries like the USA –to the degree that individuals are losing their bodily ability to fight off certain diseases. By©Emmy Koeleman That’s the essence of the ‘hygiene hypothesis’, a school of thought that argues that rising incidence of asthma, inflammatory bowel disease, multiple sclerosis and perhaps several oth