I heard that dreadlocks shrink, why is this?

Turning away from a pile of paper work Dr Edd Says.....
You heard correctly! Dreadlocks do have a tendancy to shrink in the first year! This is because as they begin to tighten they naturaly shrink up a bit! Youd be suprised by how much dreadlocks shrink, when my locks started shrinking up it was so noticable that people were asking me if i had been cutting my locks!

Shrinkage is just part of the journey you have to go through on the road to dreddieness:-p