Many people choose to start a new year with a renewed focus on health and wellbeing.
One increasingly popular way to do this is by taking part in Dry January – an international campaign that encourages people to take a break from alcohol for 31 days.
First launched in the UK in 2013, Dry January offers a chance to reset your relationship with alcohol, especially after a period of overindulgence during Christmas and New Year.
Over a decade later, the campaign has grown into a well-recognised movement, with thousands of participants around the world, reporting improvements in sleep, energy, mood, and physical health.
Here, we explore what alcohol does to the body, alcohol consumption guidelines, the benefits of cutting back on alcohol, and practical tips for taking part in Dry January.
What happens to your body when you drink alcohol?
According to the Healthy Ireland Survey 2025, 35% of adults reported drinking alcohol at least once a week.
When alcohol is consumed, it is absorbed into the bloodstream and processed mainly by the liver. While the liver can metabolise small amounts efficiently, excessive or frequent drinking causes a build-up of toxins, which can have harmful effects across multiple organ systems.
Some of the ways alcohol affects the body include:
- Liver damage: The liver breaks down alcohol, but heavy or prolonged drinking can lead to fatty liver, alcoholic hepatitis, fibrosis, or cirrhosis – a serious condition involving permanent liver scarring.
- Brain function: Alcohol interferes with the brain’s communication pathways, impacting mood, behaviour, coordination, and decision-making. Long-term use is associated with cognitive decline and increased risk of dependency.
- Heart health: Drinking too much alcohol raises blood pressure, weakens the heart muscle (cardiomyopathy), and increases the risk of heart attack and stroke.
- Digestive system: Alcohol irritates the stomach lining, contributing to acid reflux and inflammation. Over time, it can impair nutrient absorption and increase the risk of pancreatitis and ulcers.
- Cancer risk: Alcohol consumption is classified as a Group 1 carcinogen by the International Agency for Research on Cancer, and has been linked to several cancers, including mouth, throat, oesophagus, liver, colon, and breast cancer.
- Mental health: Regular heavy drinking can worsen or contribute to conditions such as anxiety, depression, and sleep disorders.
Alcohol’s effects are dose-dependent, meaning the more you drink, and the more frequently you drink, the higher your risk of developing health problems.
Learn more: The effects of substance misuse
Understanding Ireland’s low-risk alcohol guidelines
To support healthier drinking habits, the Health Service Executive (HSE) provides low-risk alcohol guidelines based on evidence about the impact of alcohol on physical and mental health.
These recommendations are intended to help people make informed decisions and reduce the risk of alcohol-related harm.
Current HSE low-risk alcohol guidelines
- Weekly limit:
- Men are advised to drink no more than 17 standard drinks per week
- Women are advised to drink no more than 11 standard drinks per week
- Alcohol-free days: It is recommended to have at least 2-3 alcohol-free days each week to allow your body time to recover.
- Pace and portion control: Spread your drinks out over the week and try to have no more than 5 standard drinks in one sitting, to reduce the risk of binge drinking and acute harm.
These guidelines are designed to reduce alcohol-related harm, but it’s important to note that no level of drinking is completely risk-free.
For individuals with specific health conditions or those who are pregnant, abstinence is the safest choice.
What is a standard drink in Ireland?
A standard drink in Ireland contains 10 grams of pure alcohol. This is approximately:
- A half pint of beer (4.5% ABV)
- A small glass of wine (100ml) (12.5% ABV)
- A pub measure of spirits (35.5ml)
It’s important to be aware of your intake, as the strength and serving size of alcoholic drinks can vary significantly between brands and venues.
What are the benefits of cutting back on alcohol?
Whether you’re taking part in Dry January or simply aiming to reduce your intake, cutting back on alcohol can lead to significant improvements in your physical and mental health – often within just a few weeks.
Here are some key benefits:
- Improved liver health
Reducing or stopping alcohol consumption gives the liver a chance to repair itself and reduces the risk of long-term liver disease. - Better mental wellbeing
Alcohol is a depressant and can worsen anxiety, low mood, and irritability. Many people notice improved mental clarity, mood stability, and resilience after reducing their intake. - Deeper, more restorative sleep
While alcohol might make it easier to fall asleep, it disrupts REM (deep) sleep stages, leaving you feeling groggy the next day. Cutting back can lead to more restful and energising sleep. - Weight loss and improved digestion
Alcohol contains hidden calories and sugars that contribute to weight gain. Reducing intake may support weight loss and improve digestive function, including reduced bloating and acid reflux. - Lower risk of serious health conditions
Reducing alcohol consumption decreases your risk of serious conditions such as high blood pressure, stroke, heart disease, liver disease, and several forms of cancer. - Increased energy and focus
Without the dehydrating and sedating effects of alcohol, many people experience a noticeable boost in energy levels and concentration. - Financial savings
Alcohol can be expensive. Cutting back, even for a month, can lead to noticeable savings, whether from fewer nights out or reduced spending at the supermarket.
Taking a break from alcohol, even temporarily, can offer a valuable opportunity to reassess your habits and experience how your body and mind respond without regular alcohol use.
Please note: if you are struggling with alcohol addiction, reducing your alcohol intake without medical advice might not be right for you. It is strongly recommended that you speak to your GP, who will be able to provide advice on reducing alcohol intake safely.
Alcohol testing for peace of mind, legal matters and the workplace
When it comes to managing and monitoring alcohol consumption, alcohol testing can play a key role, offering valuable insights for legal and official matters, and the workplace.
Our ISO 17025-accredited laboratory is equipped to test a variety of samples for chronic and excessive alcohol consumption or abstinence, including hair, nails, and blood. We also offer breath alcohol testing and continuous alcohol monitoring using the SCRAM CAM® bracelet.
For more information or to request a quote for an alcohol test, call our Customer Services team on 01 402 9466 or email info@alphabiolabs.ie.

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