Thatcher gene allows some to get by on just 4 hours' sleep

A gene that controls how long we sleep has been discovered by scientists explaining why some people have their own internal alarm clock.

Scientists identified a gene called ABCC9 that can reduce the length of time we sleep. The same gene has previously been linked to heart disease and diabetes.

The discovery could explain why light sleepers, such as Margaret Thatcher, are able to get by on just four hours shut-eye a night.

Read the whole story at London Daily Mail