One day, a bear from the North presents with severe weight loss, and malnutrition. He is seen by a general physician. The general physician is given his medical history and surprised to see that this thin bear had lost over 30kg ever since moving to the North.

"Must be cold up there, Mr Bear," says the physician.

"Have you been eating enough?"

The bear looks up at the physician and says,

"But of course! In fact it's been so cold I've been eating more and more lately!"

The physician suspects that the bear has contracted a sort of parasite. He decides to give the bear a course of antihelmintic medication.

"Take two of these, every morning, 2 hours before food, for 7 days. Be sure to check your feces for any worms after you... conduct your business."

So the bear heads back up north and tries his new medicine. A week later, he returns to the hospital, even weaker and thinner than before. Read More »