Does Facebook Cause Cancer?

A researcher says that making too many friends on Facebook, MySpace and Twitter may be killing you.

Psychologist Dr. Aric Sigman, writing in Biologist , the journal of the Institute of Biology, says that too many online interactions and not enough real world interactions could lead to serious health issues. These health issues could lead to cancer, strokes, heart disease and dementia .

Sigman concludes , "While the precise mechanisms underlying the association between social connection, morbidity and mortality continue to be investigated, it is clear that this is a growing public health issue for all industrialized countries."

In another paper from 2005, Sigman also warned of the adverse effects of too much TV on society. In a paper titled " How TV Is (quite literally) Killing Us " published in the UK's Daily Mail, he wrote that TV viewing is "the greatest health scandal of our time."

One columnist in England says she will keep on friending people online and says she has never been more connected. She writes, "Social networks are the medium, not the message."