Researchers in Britain conclude after a six-year study of the effects of short-term use of mobile phones that there is no danger.

Findings of the UK Mobile Telecommunications and Health Research (MTHR) Programme were released Wednesday, with lead author Lawrie Challis concluding that the results are reassuring.

Lawrie Challis, OBE, Emeritus Professor of Physics at Nottingham University, is currently the chairman of the committee of independent experts that manage the MTHR, reports Medical News Today website.

The report released Wednesday is based on 23 studies of the effects of mobile phones on human health, all of which were reported in peer review journals, according to Challis.

Challis said the six-year research program found no association between short-term (less than 10 years) mobile phone use and brain cancer. Studies on volunteers found no evidence that signals from mobile phones affect brain function.

Likewise, short-term use of mobile phones did not appear to alter cells and tissues, other than heating them.

The MTHR committee said it does not consider further research is necessary in these directions.

Long-term exposure however still necessitates research. The MTHR recommended further research in this area, as only a small number of people who have been using mobile phones for ten years or more participated in the studies.

“The results are so far reassuring but there is still a need for more research, especially to check that no effects emerge from longer term phone use from adults and from use by children,” Challis said in a statement, quoted by Medical News Today.

Challis also noted that the UK studies that made up the report had not examined children. He added that there is a possibility for children to be more sensitive to radio-frequency radiation emitted by mobile phones than adults.

A second MTHR program is currently developing and involves some 200,000 people in Denmark, Finland, Sweden and Britain, Challis said.