Does Cell Phone Use Disrupt Sleep?

Cell phone use will disrupt sleep, says a study conducted by Sweden's Karolinska Institute and Wayne State University in Detroit.

The study of 35 men and 36 women between 18 and 45 years old was funded by the Mobile Manufacturers Forum, the trade group for the industry. At this writing, however, its site has not posted a news release or the study results.

But a spokesman for British mobile phone operators called the findings inconclusive, according to Telecoms.com He said on BBC radio this morning that using a phone before or in bed was no worse than having a cup of coffee before turning in. The report also said manufacturers called into question the size of the study sample.