A latest study done by a team of Danish researchers confirmed that cell phones are not directly linked to brain cancer. However, the chances of cancer can still be there for the heavy users, warned the Denmark based researchers.

The study published in the British Medical Journal included and monitored 358,403 phone users aged over 18 and found that users for 13 years or more had the same cancer risk as non-users.

In general, our findings are in line with most of the epidemiological research that has been conducted to date, said the lead author Patrizia Frei of the Danish Cancer Society's Institute of Cancer Epidemiology. They are also in line with in vitro and in vivo studies that show no carcinogenic effects on the cellular level.

The study got approval from an Australian expert and professor of health psychology, Rodney Croft. To be honest I think it's what we would have expected. I think that it does provide a strong indication that there isn't a relationship between mobile phone use and cancer, he said.

Some critics, however, still refuse to take the result as final since earlier studies found possible carcinogenic effects of mobiles on the human brain. A study done by the World Health Organization (WHO) in June revealed the negative impact of the radio-frequency electromagnetic fields emitted by cell phones and concluded that children are most vulnerable to radiation. But the link between cancer and cell phones was never confirmed by the researchers due to lack of long-term data.

The latest study reaffirmed the basic science that cell phones cannot cause brain tumor, believe scientists. The findings, however, do not rule out small to moderate increase in risk for extremely heavy users, or for people using cell phones for more than 15 years.