In May 1943, Edsel Bryant Ford, the son of auto magnate Henry Ford, died at the age of 49 in Detroit, of what some claimed was a broken heart.

Biology, however, decreed that Ford died of undulant fever, apparently brought on by drinking unpasteurized milk from the Ford dairy herd, at the behest of his father’s mistaken belief that all things natural must be good.

Shortly thereafter, my mother – then a child — developed undulate fever, which my grandfather, with no knowledge of microbiology, attributed to the dairy cows on his farm in Ontario, Canada.

He got rid of the cows and went into potatoes, and then asparagus.

Earlier this month, the latest in a seemingly endless number of outbreaks attributed to raw or unpasteurized milk, contributed to the death of a 3-year-old in Victoria, Australia, and left at least three other children under the age of five with hemolytic uremic syndrome, a side effect of infection with shiga-toxin producing E. coli.

In addition to the personal tragedies, every outbreak raises questions about risk and personal choice.

It’s true that choice is a good thing. People make risk-benefit decisions daily by smoking, drinking, driving, and especially in Brisbane, cycling.

But the 19th-century English utilitarian philosopher, John Stuart Mill, noted that absolute choice has limits, stating, “if it (in this case the consumption of raw unpasteurized milk) only directly affects the person undertaking the action, then society has no right to intervene, even if it feels the actor is harming himself.”

Excused from Mill’s libertarian principle are those people who are incapable of self-government — children.

Society generally regulates what is allowed for children – most parents aren’t having a scotch and a smoke with their 3-year-olds.

Celebrity chefs, would-be farmers and the wannabe fashionable can devoutly state that grass-fed cattle are safer than grain-fed by spinning select scientific data — except that the feces of cattle raised on diets of grass, hay and other fibrous forage do contain E. coli O157:H7 as well as salmonella, campylobacter and others.

Ten years ago, Ontario’s former chief medical health officer, said, “Some people feel that unpasteurized milk is either not bad for their health (they don’t believe the health risks) or they actually believe that it has healing properties because it’s all natural and untainted by government interference.”

Except poop happens, especially in a barn, and when it does people, usually kids, will get sick. That’s why drinking water is chlorinated and milk is pasteurized — one more example of how science can be used to enhance what nature provided.

Yes, lots of other foods make people sick, but in the case of milk, there is a solution to limit harm – pasteurization.

Society has a responsibility to the many — philosopher Mill also articulated how the needs of the many outweighed the needs of the one — to use knowledge to minimize harm.

The only thing lacking in pasteurized milk is the bacteria that make people, especially kids, seriously ill.

Adults, do whatever you think works to ensure a natural and healthy lifestyle, but please don’t impose your dietary regimes on those incapable of protecting themselves: your kids.

Dr. Douglas Powell is a former professor of food safety in Canada and the U.S. who now resides in Brisbane and publishes barfblog.com

dpowell29@gmail.com