16/02/2011 05:30 GMT | Updated 22/05/2015 06:12 BST

Why A Drink Before Bed Means Less Sleep

woman-champagne-alcohol-sleep This much booze before bed really won't help you sleep better. Photo: Corbis

It's easy to get into the habit of having a glass of wine or two before bedtime if you're the kind of person who finds it difficult to get to sleep. But because alcohol affects women differently than it affects men, you might find you'll actually sleep less. That's the conclusion of University of Michigan researchers who suggest alcohol disrupts sleep patterns in women more than in men.

Alcohol may well make you feel sleepy when you first climb into bed, they say, but it can affect your quality of sleep later in the night and make you wake up more frequently. The result is that you'll actually get less sleep than if you hadn't had a nightcap.

"A substantial portion of the population uses alcohol on a regular basis to help with sleep problems," says the study's lead author J. Todd Arnedt. "But they may be less aware of the disruptive effects of alcohol on sleep later in the night."

Writing in the journal Alcoholism: Clinical & Experimental Research, the scientists explain that women metabolise alcohol differently to men.

For instance, because women on average have a higher percentage of body fat than men and less water in our systems, we have a higher breath-alcohol concentration after drinking the same amount of booze as men relative to our body weight.

Alcohol is also eliminated from women's bodies faster than men's, they add.

What's your favourite bedtime drink? Are you a hot chocolate fan or do you go for a shot of the hard stuff?

If your mind matters follow us on Twitter and become a fan on Facebook