Tall Dutch

When I lived in Holland I felt really short. Not so strange, since the Dutch are the tallest people in the world. Made me think of why.

The only thing I can come up with is that they clean their dirty dishes with water and dishwasher liquid, but they don't rinse! They take the glasses, cutlery and plates straight out of the bubbly water and dry it!

Could it be something in dishwasher liquid that make people grow?