Colourless, odourless and tasteless, radon is a gas which occurs naturally in the land. But high levels of this radioactive substance can increase the risk of lung cancer. Radon is formed by radioactive decay from the small amounts of uranium that can be found naturally in all rocks and soils - so it is found everywhere.
The UK Health Security Agency (UKHSA), however, states that "every building contains radon but the levels are usually low. "The chances of a higher level depend on the type of ground." The radiation emitted from the elements can increase the risk of cancer and it appears that those living in rural areas are surrounded by more levels of this radioactive gas than more urban areas.
Over time, exposure to radon can cause lung cancer - and is responsible for 1,100 deaths each year in the UK. READ MORE: Map reveals hotspots for invasive plant that can devalue your home Much of Sussex is at higher risk compared to the rest of the UK - with homes along the coast typically at a maximum 30 per cent risk. Homes near Lewes and Westdean, near Seaford, are most at risk with a 30 per cent radon potential.
In Eastbourne, homes in the west end are more at risk than those in the east - with less than one per cent of homes at the action level in the east end of the town. Map shows radon levels in Brighton and Sussex (Image: UKHSA) Central Brighton sits at a three to five per cent radon potential while Hove is at a one to three per cent risk. In less built-up areas like much of .