‘No doubt’ sunbeds cause cancer. bbcnews. July 28, 2009.There is no doubt using a sunbed or sunlamp will raise the risk of skin cancer, say international experts.Previously, the International Agency for Research on Cancer (IARC) assessed sunbeds and sunlamps as "probably carcinogenic to humans".But it now says their use is definitively "carcinogenic to humans".Campaigners believe the move, announced in the journal Lancet Oncology, will increase pressure for tighter industry regulation of sunbed use. [ See ]