Problem:

It seems that many nutrition experiments [directed at human diet] are carried on laboratory mice.

Question: Is there any justification that nutrition that is good or bad for laboratory mice will also be same way applicable to humans?

I wonder because mice and humans, although both being mammals, are separated probably by tens millions years of separate evolution. By the "mammals" logic, dolphins, cows, wolves, and goats, all being mammals, shall have same diet as mice ?

Sometimes one man's food is another man's poison (lactose differences for example, due to genetic differences). That's man to man, same species.

On what is "transfer of nutritional information" from species to species based? Justify your answers.