Watching lots of TV during middle age speeds up memory loss in later life, a series of studies shows.
Brain scans of people aged between 30 and 50 who watched a lot of TV showed lower volumes of grey matter more than a decade later in life, indicating brain size reduction or deterioration.
One study which followed 10,700 adults over a 24 year period found that watching just one or two hours a day was associated with a 7 per cent sharper decline in memory tests than those who avoided TV.
