Do telomeres lengthen with age?

For biology I have to make a work about the positive consequences of old fatherhood. In this topic I came across something in an article:

http://www.knack.be/nieuws/science/old-fathers-have-healthy-children/article-4000121958124.htm

In the same article they say that a small piece of the telomere dies with age and the cell dies. And they also say that because the sperm cells divide so quickly, the telomeres are worked harder and they lengthen with age. What is correct?

Kind regards, Laurenza