Hi,
I have been told not to eat bread fresh from the oven. I have read eating bread fresh from the oven can also give a false positive for alcohol consumption related to the yeast. I have occasionally done the deed and eaten bread fresh from the oven: nothing ill was ever observed.
I do have to wonder if this notion of preferring day-old bread over fresh bread is rooted in economy. If you are a new immigrant or dirt poor and every penny counts, isn't easier to suggest fresh bread is not as good as day old in a bit of reverse snobbism?
In the Soviet Union, we had an employee who could not eat a meal without a piece of bread. If lunch was on the table and no bread was available, he left to buy bread. If the bread was not fresh, he left to buy bread. Consequently a lot of bread was wasted.
Bread was highly subsidized and quite political. A kilo loaf of dark break cost 10-15 kopeks, whereas a kilo of cookies was a rouble or more. While the government spent considerable amounts of foreign currency to guarantee fresh and cheap bread. Fresh bread was a daily purchase, though I thought the day(s) old bread was still acceptable. My using bread to the very end was not respected by my friends.
To discourage waste of bread, it was against the law to feed animals bread. Animal feed cost more than bread. A practical farmer raiding garbage for partial loaves could land in jail with considerable publicity to discourage others.
In my kitchen, there is a poster where a child is admonished not to waste bread. Behind him is a pie chart picture with the various quarters demonstrating the process of raising grain. The slogan, "Young man, bread is labor!"
Regards,