Undergoing heart surgery in the afternoon may be far safer than in the morning because it synchs up with the body’s circadian rhythm, reports The Telegraph.

A review by French researchers of nearly 600 people who underwent heart valve replacements, found that people who had morning operations were twice as likely to suffer a major cardiac event, in the following 500 days.

Only nine per cent of afternoon patients suffered a heart attack, heart failure, or death from heart disease, in the follow-up period, in contrast to 18 per cent of morning patients, the study in The Lancet showed.

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