 On 8 July 2010, the UK's Health Protection Agency issued new advice setting a "Target Level" of 100 Bq/m3 whilst retaining an "Action Level" of 200 Bq/m3.The same levels (as UK) apply to Norway from 2010; in all new housings preventative measures should be taken against radon accumulation.Results from epidemiological studies indicate that the risk of lung cancer increases with exposure to residential radon.