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Pouring yourself a glass of wine after work will help you sleep better… but ONLY if you’ve had a coffee already, scientists say 

  • Coffee and wine may make you feel less sleep-deprived than having either alone
  • The best night’s sleep will be achieved by avoiding both coffee and alcohol 

It is the perfect excuse to indulge in a daytime cup of coffee and an evening glass of wine – both together could make you feel less sleep-deprived than having either on its own.

It is well known that coffee during the day can make it harder to fall asleep at night.

But a study suggests also having an alcoholic drink before bed could help to sleep longer, offsetting some of the effect of the caffeine.

Meanwhile an evening tipple can lead to poor-quality slumber, but coffee could make this easier to deal with, by boosting alertness.

The best night’s sleep will always be achieved by avoiding both coffee and alcohol.

An evening tipple can lead to poor-quality slumber, but coffee could make this easier to deal with, by boosting alertness

But, for those who cannot resist, the new research suggests a daytime coffee and an evening drink could help balance each other out.

The findings come from a six-week study of 17 people, which discovered every daily small cup of coffee, panadol lekarna or a similar caffeinated drink, reduced the average amount of sleep someone got by around 10 minutes a day – or an hour a week.

However, for every cup, plus a standard alcoholic drink that someone had per day, the results suggest they would see a sleep reduction of approximately only five minutes a day, or half an hour a week.

An alcoholic drink, which tends to increase sleepiness, could therefore cancel out some of the effect of a coffee earlier in the day.

The study found every extra standard alcoholic drink a day, like a small glass of wine or half a pint of beer, caused a more restless night’s sleep, based on people’s rating of how well they slept from zero to 100.

READ MORE: ‘Wine o’clock’ culture is blamed for British women being the biggest boozers in world: Shock report reveals a QUARTER get inebriated every month

Nearly one in five adults reported binge drinking at least once a month, on average across 29 OECD countries in 2019. The figure varies 10-fold, from less than 3 per cent in Turkey to more than 30 per cent in Germany, Luxembourg, the UK and Denmark

But if they also had caffeine that day, people ranked their sleep quality less poorly.

Researchers believe coffee can help to mask the daytime drowsiness caused by alcohol’s effect on sleep.

Frank Song, who led the study from the University of Washington, said: ‘We see evidence to suggest that people drink coffee and alcohol in an effort to “balance” their sleep.

‘Indeed, having alcohol after coffee may give you an easier time falling asleep, and coffee may make people feel less drowsy if they drink alcohol later in the day.

‘However they should be aware they probably are still getting worse quality sleep, and both alcohol and caffeine are best avoided overall.’

The study, published in the journal PLOS One, looked at financial traders, as an example of busy, working people who often rely on both caffeine and alcohol.

Every day for six weeks the male volunteers completed a daily survey including how long and well they slept.

The apparently positive effect of alcohol being a sedative, which causes drowsiness, is that people lost less sleep after drinking it along with caffeine, rather than having caffeine alone.

The more negative effect is that alcohol suppresses important ‘rapid-eye-movement’ (REM) sleep at the start of the night, making sleep poorer in quality after a drink.

But, although people ranked their night’s sleep three points more poorly on the 100-point scale after each glass of alcohol, this effect was slightly reduced for every small cup of a caffeinated drink they had in the same day.

Caffeine, which stays in the body for hours, could mask the drowsiness someone feels after a poor night’s sleep following a nightcap.

The study only looked at the sleep durations and quality people reported, rather than using sleep trackers, so more research is needed.

Researchers also did not track exactly when in the day people consumed caffeine or alcohol.

But they conclude that the results may help to explain why people ‘self-medicate’ with both alcohol and coffee to feel less tired.

DO YOU DRINK TOO MUCH ALCOHOL? THE 10 QUESTIONS THAT REVEAL YOUR RISK

One screening tool used widely by medical professionals is the AUDIT (Alcohol Use Disorders Identification Tests). Developed in collaboration with the World Health Organisation, the 10-question test is considered to be the gold standard in helping to determine if someone has alcohol abuse problems.

The test has been reproduced here with permission from the WHO.

To complete it, answer each question and note down the corresponding score.

YOUR SCORE:

0-7: You are within the sensible drinking range and have a low risk of alcohol-related problems.

Over 8: Indicate harmful or hazardous drinking.

8-15: Medium level of risk. Drinking at your current level puts you at risk of developing problems with your health and life in general, such as work and relationships. Consider cutting down (see below for tips).

16-19: Higher risk of complications from alcohol. Cutting back on your own may be difficult at this level, as you may be dependent, so you may need professional help from your GP and/or a counsellor.

20 and over: Possible dependence. Your drinking is already causing you problems, and you could very well be dependent. You should definitely consider stopping gradually or at least reduce your drinking. You should seek professional help to ascertain the level of your dependence and the safest way to withdraw from alcohol.

Severe dependence may need medically assisted withdrawal, or detox, in a hospital or a specialist clinic. This is due to the likelihood of severe alcohol withdrawal symptoms in the first 48 hours needing specialist treatment.

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