Is a cheese sandwich unhealthy 2 slices of cheese on wholemeal bread for dinner?

"Is a cheese sandwich unhealthy 2 slices of cheese on wholemeal bread for dinner?"

No a cheese sandwich is not unhealthy with two slices of cheese on whole meal bread. But only as long as it's part of the meal. Otherwise a cheese sandwich in and by itself is not enough, in terms of calories, and other essential nutrients. Dinner or the evening meal should somewhere between four hundred and five hundred calories, on average.