"overdate food".
Going against the grain, but I think some people are being over-sensitive about this.
First, there's a difference between sell-by and use-by. The first predates the second. You need to use your common sense and look at the type of food involved.
As Violette says, we often see fruit and veg which is going a bit mushy. But it won't do you any harm, maybe ask for a reduction.
OTOH be more careful about meat products, and some frozen foods. Even fish, you can tell by the smell etc if it's edible.
There's so much wastage of food, it's almost criminal.
We have food banks nearby. I once offered them some of our surplus eggs and they had to refuse - Health and Safety rules.
Businesses etc are afraid of being sued if someone claims to have been made ill by something they bought at their store.