A study has found that men may sleep better than women. Because of this, sleep disorders experienced by the sexes need different treatments. Insomnia is 1.5 times more common among women. Researchers say one reason for this is our body clock. Women's circadian cycles are about six minutes shorter than men's, so women have less time in which to rest. Another reason is motherhood. There are unequal strains and burdens on mothers. A doctor said: "It's almost like their brain was half-listening out for their children in the middle of the night."

People are finding it harder to get a good night's rest. The stress of everyday life means more of us are struggling to sleep. Around 30 per cent of the world experiences sleep deprivation. This adversely affects health. A lack of sleep can lead to life-threatening health conditions. These include diabetes and heart disease, and hypertension. Insufficient sleep can also negatively impact our powers to concentrate, and lead to a deterioration in mental health. A neurologist said: "There is a high correlation with underlying psychiatric disorders and insomnia."