All humans could - and usually do at some time or other in their lives - suffer from this.
However he could not bare to watch the humans suffer so much.
Almost all humans suffer from love sickness one or more times in their lives.
Though humans can suffer from it, only 13 cases have ever been recorded, world-wide.
It can cause humans to suffer headaches, fatigue and depression.
If I hear you right, humans don't suffer their changed perception of reality until the workers begin to operate.
That alone is the justification of all that humans may suffer.
Human problems onstage tend to move us when the humans in question suffer deeply and bravely.
Regions where humans and animals have suffered from the foot-and-mouth epidemic.
It is hoped that such tissue will be used eventually for transplantation in humans suffering from heart disease.