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I think we have some of these things in the Netherlands as well, people believe (among others): * Air draft causes a stiff neck * Freezing meat twice and eati

I think we have some of these things in the Netherlands as well, people believe (among others): * Air draft causes a stiff neck * Freezing meat twice and eating it will make you sick * Cold in general will make you sick ("catch a cold") * If you hold your poo to long, you can never poo (well) anymore (from the grandparents, pretty sure they believed it, actually it may be true to a certain degree but they used to go when one need to go asap.) I'm sure I'll come up with more.

DanBC 8y ago
> * Freezing meat twice and eating it will make you sick That's not unreasonable. There are different ways to give the safety advice: 1) Don't do it. https://www.nhs.uk/live-well/eat-well/how-to-store-food-and-leftovers/#re-freezing-meat-and-fish https://www.nhs.uk/live-well/eat-well/how-to-store-food-and-... or 2) It's fine so long as the meat defrosted in the fridge, and your fridge is keeping the correct temperature. Don't re-freeze meat kept out of the refridgerator for longer than 2 hours. https://food.unl.edu/it-safe-refreeze-raw-meat-and-poultry-has-thawed https://food.unl.edu/it-safe-refreeze-raw-meat-and-poultry-h... Sometimes the simpler message is safer.
maus42 8y ago
>* Freezing meat twice and eating it will make you sick Uh, every frozen meal I have ever seen has come with the printed warning not to freeze it again after it has melted? Freezing does not kill microbes, and additionally formation of ice during the freezing breaks the internal structure of foodstuff making it better medium for bacterial growth. So repeated freezing-unfreezing, especially if the product is taken into room temperature and back allows unwelcome microbes to proliferate. Like with all food poisoning hazards, it will not make you sick with 100% certainty, but increases the risk enough that it is not recommended. This is near word-by-word translation of the guidelines of Finnish medical society [1] and food safety authority [2]. It is difficult to call "do not freeze stuff again" an unfounded superstition equal to fan death if it is the common recommendation by national authorities. [1] https://www.terveyskirjasto.fi/terveyskirjasto/tk.koti?p_artikkeli=asy00212 https://www.terveyskirjasto.fi/terveyskirjasto/tk.koti?p_art... [2] https://www.evira.fi/elintarvikkeet/valmistus-ja-myynti/elintarvikehygienia/hygieeniset-tyotavat/elintarvikkeiden-pakastaminen/ https://www.evira.fi/elintarvikkeet/valmistus-ja-myynti/elin...
- teekert 8y ago
  Ok I didn't consider the "makes meat more permeable to bacteria" -argument. Still, bacteria do die from repeated freeze-thawing cycles. But, in any case, I doubt many people ever investigated the scientific evidence.
  - coldtea 8y ago
    >Ok I didn't consider the "makes meat more permeable to bacteria" -argument. Still, bacteria do die from repeated freeze-thawing cycles. Not really. They multiply during the thawing and lie "inactive" during freezing. So repeated freeze-thawing cycles = several generations more bacteria than you started with. Bernhard Redl, an associate professor in the molecular biology department at the University of Innsbruck in Austria: "It is clear that freezing does not kill most of the bacteria," said Redl, "but puts them in a dormant state." (...)
coldtea 8y ago
> Freezing meat twice and eating it will make you sick* It won't necessarily make you sick, but it will have much more bacteria after been thawed (the same bacteria it had frozen, but now reproducing again during the time the meat is in normal temperature before getting frozen a second time)

DanBC 8y ago

> * Freezing meat twice and eating it will make you sick That's not unreasonable. There are different ways to give the safety advice: 1) Don't do it. https://www.nhs.uk/live-well/eat-well/how-to-store-food-and-leftovers/#re-freezing-meat-and-fish https://www.nhs.uk/live-well/eat-well/how-to-store-food-and-... or 2) It's fine so long as the meat defrosted in the fridge, and your fridge is keeping the correct temperature. Don't re-freeze meat kept out of the refridgerator for longer than 2 hours. https://food.unl.edu/it-safe-refreeze-raw-meat-and-poultry-has-thawed https://food.unl.edu/it-safe-refreeze-raw-meat-and-poultry-h... Sometimes the simpler message is safer.

maus42 8y ago

>* Freezing meat twice and eating it will make you sick Uh, every frozen meal I have ever seen has come with the printed warning not to freeze it again after it has melted? Freezing does not kill microbes, and additionally formation of ice during the freezing breaks the internal structure of foodstuff making it better medium for bacterial growth. So repeated freezing-unfreezing, especially if the product is taken into room temperature and back allows unwelcome microbes to proliferate. Like with all food poisoning hazards, it will not make you sick with 100% certainty, but increases the risk enough that it is not recommended. This is near word-by-word translation of the guidelines of Finnish medical society [1] and food safety authority [2]. It is difficult to call "do not freeze stuff again" an unfounded superstition equal to fan death if it is the common recommendation by national authorities. [1] https://www.terveyskirjasto.fi/terveyskirjasto/tk.koti?p_artikkeli=asy00212 https://www.terveyskirjasto.fi/terveyskirjasto/tk.koti?p_art... [2] https://www.evira.fi/elintarvikkeet/valmistus-ja-myynti/elintarvikehygienia/hygieeniset-tyotavat/elintarvikkeiden-pakastaminen/ https://www.evira.fi/elintarvikkeet/valmistus-ja-myynti/elin...

teekert 8y ago
Ok I didn't consider the "makes meat more permeable to bacteria" -argument. Still, bacteria do die from repeated freeze-thawing cycles. But, in any case, I doubt many people ever investigated the scientific evidence.
- coldtea 8y ago
  >Ok I didn't consider the "makes meat more permeable to bacteria" -argument. Still, bacteria do die from repeated freeze-thawing cycles. Not really. They multiply during the thawing and lie "inactive" during freezing. So repeated freeze-thawing cycles = several generations more bacteria than you started with. Bernhard Redl, an associate professor in the molecular biology department at the University of Innsbruck in Austria: "It is clear that freezing does not kill most of the bacteria," said Redl, "but puts them in a dormant state." (...)

coldtea 8y ago

> Freezing meat twice and eating it will make you sick* It won't necessarily make you sick, but it will have much more bacteria after been thawed (the same bacteria it had frozen, but now reproducing again during the time the meat is in normal temperature before getting frozen a second time)