The truth about alcohol and sleep by Daisy Steel

183 days alcohol-free — and the biggest change surprised me

Today marks 183 days alcohol-free, and if you asked me what the single biggest benefit has been, I wouldn’t hesitate: sleep.

Sleep, sleep… and more sleep.

For years I battled relentless insomnia — waking up at 2–3am unable to fall back asleep, or lying there all night staring at the ceiling. Everything feels heavier in the small hours. Problems grow teeth. Anxiety spirals. And the next day? You feel frayed, foggy, fragile.

One of the reasons I started drinking too much in the first place was because I used alcohol as a sleep aid. And I’m not alone — a recent UK survey shows 20% of adults rely on alcohol to fall asleep.

But the truth? Even moderate drinking disrupts sleep far more than it helps it.

What alcohol really does to your sleep

Alcohol interferes with circadian rhythms, suppresses melatonin, and significantly disrupts sleep architecture — especially REM sleep, the deep, restorative dream stage that begins around 90 minutes after you fall asleep.

Studies show:

• alcohol can help you fall asleep faster,

• but it dramatically reduces REM, leading to daytime fatigue, poor concentration, and mood imbalance.

Irshaad Ebrahim from The London Sleep Centre explains it clearly:

Alcohol may shorten the time it takes to fall asleep, but it causes more disrupted sleep in the second half of the night.

And that’s where everything unravels.

The “rebound effect”: why you wake up too early

During the second half of your sleep cycle, alcohol triggers a rebound effect — your body snaps back into alert mode as it metabolises the alcohol.

Suddenly you’re hyper-sensitive to everything:

• a sliver of light,

• a car door outside,

• a shift in room temperature.

And boom — you’re wide awake at 4:17am.

Even when you desperately need more rest.

This explains why we often wake up early “for no reason” after a few drinks — even if we felt drowsy at bedtime.

Alcohol: sedative first, sleep destroyer second

Alcohol enters the bloodstream within minutes and depresses the central nervous system — which is why it initially feels calming, warm, sedating.

But the effect doesn’t last.

Your liver then races to remove the alcohol — because your body treats it as a toxin.

To flush it out, it pulls water from your cells and pushes it through your kidneys and bladder.

Translation: you wake up to pee.

Not once. Usually several times.

The diuretic effect (and why your bladder won’t let you sleep)

Alcohol suppresses vasopressin, the hormone that regulates how much water the kidneys retain.

When vasopressin drops:

• your kidneys dump water into your bladder,

• your bladder signals “urgent!”,

• you wake up repeatedly — even when you’re exhausted.

On top of that, alcohol increases the acidity of urine, irritating the bladder lining, which makes it feel fuller than it is.

A perfect recipe for sleepless nights.

If you struggle with sleep… try going alcohol-free

If sleep is a problem for you, the 90-day or 365-day challenge might be a turning point.

Most people notice real improvements within a few weeks:

• fewer night-time awakenings

• deeper, more restorative sleep

• waking refreshed instead of drained

• calmer mornings and dramatically improved mood

You might toss and turn at first, especially if you were drinking heavily — that’s normal.

But give it time. The benefits are enormous.

I’ve now been sober for six months, and I’m sleeping better than I have in years. Before this, I tried everything — magnesium, Nytol, herbal teas, sleep hygiene rituals. Nothing truly worked.

Going alcohol-free did.