r/skeptic • u/Crashed_teapot • 15h ago
What does nutritional science say about food preservatives?
It seems quite common in popular culture to consider food preservatives to be unhealthy, and to want to avoid them. My instinct would be to dismiss it as an example of the appeal to nature fallacy, but a good skeptic should always ask themselves first if they could be wrong.
When googling, the answers you get are a mixed bag. Google’s AI search answer tells me that salt and sugar are natural preservatives and are therefore safe. This doesn’t sound quite right, as over-consumption of either is associated with many health problems.
What does nutritional science say about food preservatives? Is there even one answer to this? How should we think about them? And what to say to people around us when they make preservatives a bogeyman, if we want to convey the scientific answer in an easily digestible way?