Remember the scene from Woody Allen’s 1973 movie Sleeper when the main character wakes up from hibernation 200 years into the future? He asks for wheat germ for breakfast, making a doctor incredulous. Back in the 20th century, the physician recalls to a colleague, deep fat, steak, cream pies, and hot fudge “were thought to be unhealthy, precisely the opposite of what we now know to be true.”
