Many, many years ago everyone was strong and healthy. They ate a very varied diet, and especially loved fruit, vegetables, and fish. Everyone took daily exercise, and they enjoyed themselves playing.

The Earth was the healthiest place you could imagine, and it was clear that both adults and children were full of joy and good moods.

All that made the dark witches furious. They only wanted to do harm and make problems for people. The worst of all of these witches was Sourface. She suggested that all the witches combine their energies to invent a potion which would take away people's desire to live happily.

So, one night, all the witches met in the forest and worked together on that evil potion. The potion was so powerful, and would need so much energy, that when one of the witches got one of the words wrong, there was a huge explosion. So big was the explosion, that it completely destroyed the forest.

It turned all those evil witches into tiny little creatures, like germs, and left them trapped in a green liquid inside a small glass bottle. There they were trapped for centuries, until one day a little boy found the bottle. Thinking it contained some kind of soft drink, he drank.

The evil, microscopic witches took advantage of this situation, and even though they were tiny and couldn't hurt anyone, they soon learned to change the little boy's likes and dislikes in order to get him to do what they wanted

In a few days, he started to feel something in his mouth and tongue, which meant he no longer wanted to eat vegetables, fruit, or fish. All he wanted to do was eat ice cream, pizza, burgers, and candy. He also felt something all over his body that meant he no longer enjoyed playing and running about with his friends. He now just wanted to stay in the house, sitting or lying.