Scientists have raised the possibility that cardiovascular disease is linked to disturbances in the body's 24-hour clock. A research team found a genetic risk factor for a form of high blood pressure is influenced by 24-hour or circadian rhythms.

Malfunctions in the body clock have been linked to many diseases. The latest study is in line with data which suggests that shift workers, long-distance flight crews and people with sleep disorders have a heightened risk of heart problems.

High blood pressure can lead to heart attack, stroke, kidney damage, and many other medical problems.