Another silly story, from the future

A chap was once carried off by aliens in a flying saucer, as they wanted to do some experiments.

After a while, the aliens said "We will return you to Earth now, and as you have helped us we will give you a cure for a human disease to take back with you. Choose one".

He thought about it. What should he choose? Cancer? Heart disease? The Common Cold?

"I might as well make some money out of this" he said to himself. "I know just the thing!"

So he was returned to Earth with his cure.

And that children is why people still get cancer, heart disease and the common cold, but now men never go bald!