Statens Serum Institut in Denmark released recently cancer data for 2012. Of interest is the sharp increase in the incidence of brain tumours during 2003 to 2012. In men the increase was 41.2 % and in women 46.1 %. The sharp increase can not be only explained by improved diagnosis. The use of wireless phones (mobile and cordless phones) has increased since the 1990’s so the increasing incidence of brain tumour may reflect that giving a reasonable latency time of about 10 years (time from first use until diagnosis).