A MIDLAND woman has been diagnosed with a dangerous reaction to sandwiches which causes her heart to stop beating for two seconds.

Birmingham doctors discovered Britain’s most popular lunchtime snack causes the 25-year-old woman to suffer unexplained fainting fits.

The patient had complained of short 10-second episodes of feeling “light-headed, occasionally nauseous, and suddenly and alarmingly unwell” and had even collapsed a couple of times since the age of 15.

Medics at Queen Elizabeth Hospital, in Edgbaston, started to get a clue to the problem when the woman explained that fainting spells were triggered after eating sandwiches and fizzy drinks.

She also said her last episode was when eating a sandwich while driving, but luckily the car was stationary in a queue of traffic.