Scientists in Britain say they've found evidence that people who quit smoking may increase their risk of being involved in a work-related accident.

The scientists looked at official records of accidents at work during No Smoking Day -- the day each year when large numbers of people try to give up tobacco.

The researchers found significantly more accidents were reported than on other days.

They say the most likely reason is a lack of concentration caused by nicotine withdrawal.

The scientists say that while this doesn't mean quitting smoking is a bad idea, nicotine replacement therapies should be made more easily availiable.