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How alcohol affects your health

Why is alcohol a health issue?

Many Australians drink alcohol in amounts that are harmful to their health. This kind of drinking can cause death, disease and injury and is a major factor in ill health and social harm in Australia.

No level of alcohol consumption can be considered safe. To reduce the risk of harm from alcohol-related disease or injury for healthy men and women, drink no more than 10 standard drinks per week and no more than 4 standard drinks on any one day. A standard drink is a can or stubbie of mid-strength beer, 100ml of wine, or a 30ml shot of spirits.

However, some people need to take more care. You are at greater risk of harm from alcohol if you are engaging in a risky activity such as driving or operating machinery, if you are under 18, if you are older than 65, or if you are taking other medicines or drugs.

During pregnancy, no level of drinking is considered safe for the baby.

Drinking heavily can put you at risk of short-term injury or illness. The effects can also accumulate, harming your health over your lifetime.

Short-term health effects of alcohol

Nearly a third of Australians drink more than they should on a single occasion (known as binge drinking). In the short term, drinking too much alcohol can lead to:

• dizziness 
• lack of judgement
• loss of coordination
• memory loss
• vomiting 
• headaches and hangovers
• accidental injury (to yourself or others)
• being in a road accident
• deliberately harming yourself or others
• alcohol poisoning (which can be fatal)

Long-term health effects of alcohol

Drinking more than 2 standard drinks a day can seriously affect your health over your lifetime. It can lead to dependence and addiction, especially in people who have depression or anxiety, and can increase your risk of suicide. Even drinking small amounts of alcohol increases your cancer risk.

Here is how regular heavy drinking can affect your body long term.

Brain: Drinking too much can affect your concentration, judgement, mood and memory. It increases your risk of having a stroke and developing dementia. 

Heart: Heavy drinking increase your blood pressure and can lead to health damage and heart attacks.

Liver: Drinking 3 to 4 standard drinks a day increases your risk of developing liver cancer. Long-term heavy drinking also puts you at increased risk of liver cirrhosis (scarring) and death.

Stomach: Drinking even 1 to 2 standard drinks a day increases your risk of stomach and bowel cancer, as well as stomach ulcers.

Fertility: Regular heavy drinking reduces men's testosterone levels, sperm count and fertility. For women, drinking too much can affect their periods.