As the Paladins became more involved, the doctors and healthcare industry were significantly impacted.

As such, those people involved in the medical profession quickly went elsewhere...

But the Paladins' healing arts could only cure physical injuries, and is useless against many illnesses.

And so in that time many people died of the plague.

Another factor is that the training of new Paladins are quite difficult...

If the Paladins were to take on additional duties beyond keeping the peace and fighting in wars, their numbers would be spread far too thin.

This also led to many Paladins dying of overwork or having their mana drained beyond what they could take.

The most serious malady to society is, everyone began to stop caring about their personal safety.

Since powerful healing magic is available, many began to seek unlimited and unrestricted thrills in their lives.

Also, some people began to indulge in the feeling they get when the magic heals their bodies.

And in order to experience that feeling again, begin to engage in self-mutilation.

According to estimates from that era, the death rate rose almost 70 per cent overall across the whole Kingdom's population.