Skip to content

This is what happens to your body when you give up alcohol for 30 days

What exactly happens to your body when you stop drinking? Here’s a breakdown of the changes you can expect as the days and weeks progress, backed by science.
dry-january

Every January, millions worldwide partake in Dry January—a 30-day alcohol-free challenge to hit the reset button on health and habits.

According to Alcohol Change UK, more than 215,000 people worldwide officially took part in Dry January in 2024—a 60% increase from 2022—and countless others participated unofficially. Here in Canada, an estimated 41%—1.6 million—went dry last January, and in the US, an estimated 22% of the population, a whopping 73 million, traded in their cocktails for mocktails for 30 days. It’s a global movement aimed to help individuals reevaluate their relationship with alcohol while experiencing some notable physical and mental health benefits.

But what exactly happens to your body when you stop drinking? Here’s a breakdown of the changes you can expect as the days and weeks progress, backed by science.

Day 1: Your Reset Begins

Within hours of your last drink, your body begins its detoxification process. The liver, tasked with metabolizing alcohol, works to clear out toxins like acetaldehyde. Blood sugar levels, which alcohol can destabilize, start to regulate. You might feel slightly irritable or tired as your body adjusts, especially if alcohol is a regular part of your routine.

Physiological changes:

  • Liver function: Begins to process and eliminate residual alcohol.
  • Hydration: Alcohol’s diuretic effects dissipate, allowing for your body to be better hydrated.
  • Sleep: Initial disruptions might occur, as alcohol withdrawal can impact sleep patterns, but these are short-lived.

Days 2-3: Physical Recovery Starts

By the second and third days, your body enters full recovery mode. Cortisol levels—known as your stress hormone—which often elevated by alcohol, start to stabilize. You may experience a welcomed boost in mental clarity, but along with it may also come some pesky cravings and mood swings as your brain adjusts to the absence of alcohol’s sedative effects.

Notable impacts:

  • Neurotransmitters: Dopamine production—artificially stimulated by alcohol—begins to rebalance naturally.
  • Sleep: Deep REM sleep improves, though it might still feel irregular for some.
  • Energy: You may start to notice a slight boost as your body begins to operate without alcohol’s interference.

First Week: Noticeable Changes

After seven days, most people report feeling more energetic and less bloated. Alcohol’s inflammatory effects on the gastrointestinal system subside, improving digestion and reducing discomfort.

Key benefits:

  • Mood stabilization: Anxiety and irritability decrease as neurotransmitters like dopamine and serotonin stabilize. You’ll now likely start to experience that “natural high” versus the manufactured “buzz” you get from imbibing. 
  • Skin health: Dehydration-related skin dullness starts to reverse, and you may notice your skin looks more hydrated and clear..
  • Sleep: More consistent and restorative sleep sets in, improving overall energy levels. You may notice that you’re more likely to leap out of bed in the morning—a wonderful perk! 

2 Weeks: Deeper Healing Occurs

By the two-week mark, more significant internal changes occur. The liver begins to repair damage caused by excessive drinking, and insulin sensitivity—impaired by alcohol—improves, contributing to better blood sugar control.

Physical and mental changes:

  • Liver health: Fat accumulation decreases, reducing your risk of fatty liver disease.
  • Mental clarity: Improved cognitive function and focus become a noticeable improvement. 
  • Weight management: You may notice weight loss due to reduced calorie intake from drinking but also boosted metabolic efficiency.

3 to 4 Weeks: Peak Benefits

As 30 days approaches, the cumulative benefits of abstaining from alcohol are undeniable. Many participants report feeling more vibrant, focused, and motivated than they have in years. Sounds refreshing, doesn’t it?

Key changes:

  • Glowing skin: Enhanced hydration and reduced inflammation give skin a healthier, glowing appearance.
  • Organ recovery: The liver shows marked improvement in functionality, and blood pressure may also normalize.
  • Mental health: Reduced anxiety, better mood stability, and increased creativity often accompany the physical benefits of abstaining.

Another welcome bonus is that studies suggest that people who participate in Dry January often drink less in the months afterward. A study from the University of Sussex found that 70% of participants maintained healthier drinking habits six months later. For some, the challenge showed them how good life feels without alcohol, leading to a permanent change in their drinking behaviour.

Tips for a Successful Dry January—and Beyond

  1. Set clear goals: Define why you’re participating and remind yourself of these reasons regularly. 
  2. Find alternatives: Stock up on non-alcoholic drinks like sparkling water, herbal teas, mocktails or zero-proof beer and wine.
  3. Track your progress: Try a habit tracker. Use apps or a journal to record how you feel each day.
  4. Build a support system: Join online Dry January groups or involve friends and family.
  5. Reward yourself: Celebrate milestones with non-alcoholic treats, like a massage or new workout gear.

About the Author

alicia-tyler

Alicia is a journalist and editor in digital and print media specializing in health, nutrition, fitness, and wellness. She was previously the Editorial Director of Clean Eating and Vegetarian Times. Her work has also appeared in Hone Health The Edge, Yoga Journal, Women’s Running, and Oxygen, among others. In addition to being a content creator, she's an ISSA-certified nutritionist, certified personal trainer, and fitness studio owner in Toronto. Alicia loves spreading the word about helpful, science-backed health information, and she can be contacted via her website at aliciamtyler.com.