Cheers or Fears? Understanding Alcohol's Role in Bowel Cancer

Article by Dr. Donald Greig

Recent research has found that drinking more than two glasses of wine a day can increase the risk of developing bowel cancer by 25%. This news highlights the importance of understanding how our drinking habits can affect our health.

Key Findings

In a study involving nearly 88,000 adults, heavy drinking—defined as consuming at least 14 alcoholic drinks a week—was linked to a higher incidence of bowel cancer. The longer a person drinks heavily throughout their life, the greater their risk becomes. Those who have consistently consumed high amounts of alcohol from a young age face an alarming 91% higher risk.

Why Alcohol Can Be Harmful

Alcohol can contribute to cancer development in several ways. When our bodies break down alcohol, it turns into a toxic compound called acetaldehyde, which can damage our DNA. Additionally, heavy drinking alters the cells in our body, making them more vulnerable to harmful substances. For some cancers, such as breast cancer, alcohol can even increase hormone levels that promote cancer growth.

Hope for Change

The good news is that it’s never too late to make a change. If someone reduces or stops drinking, especially in their fifties and sixties, their risk of bowel cancer can drop significantly.

Taking Action

Bowel cancer is a major health issue, with around 44,000 cases diagnosed in the UK (and in HK about 6,000 cases) every year. It’s crucial to be aware of lifestyle factors, including alcohol consumption, that can increase our cancer risk.

Health organizations are advocating for clearer labelling on alcoholic beverages, urging that everyone is aware of the potential risks associated with drinking. Some groups are also pushing for measures like minimum alcohol pricing and restrictions on alcohol advertising to promote healthier choices.

What You Can Do

1. Stay Informed: Know the risks of alcohol and be mindful of your drinking habits.

2. Seek Support: If you’re concerned about your alcohol intake, talk to your healthcare provider for guidance.

3. Make Healthy Choices: Consider cutting back on alcohol and incorporating healthier lifestyle habits.

Understanding the link between alcohol consumption and bowel cancer is vital for our health. By making informed choices, we can all contribute to reducing our cancer risk and improving our overall well-being.

Source

More than two glasses of wine a day raises bowel cancer risk by 25%

By Eleanor Hayward

Having more than two glasses of wine a day increases the risk of developing bowel cancer by 25 per cent, research suggests.

Scientists looked at data from 88,000 adults in the US and found that drinking heavily from the age of 18 onwards significantly increased the risk of the disease. Heavy drinking was defined as having at least 14 alcoholic drinks per week, such as pints of beer, glasses of wine or gin and tonics.

The research involved scientists from the University of Maryland and Queen’s University Belfast, who found that cancer risk increased the more people drank throughout their lives.

They asked adults aged 55 and over how much they drank each week. They were also asked to recall how much they had drunk at younger ages: between 18 and 24, 25 to 39, and 40 to 54.

The participants were followed for 20 years, during which time 1,679 of them were diagnosed with bowel cancer. Those who had more than 14 drinks a week on average were 25 per cent more likely to get the disease than people who had less than one drink. If people had consistently been heavy drinkers at all phases of adult life since the age of 18, then the risk increased to 91 per cent.

However, the study found that it was never too late to stop drinking as the heightened risk dropped if people no longer drank alcohol in their fifties and sixties, even if they had drunk a lot of alcohol as younger adults.

Bowel cancer is the second biggest cancer killer in the UK, with 44,000 cases and 16,000 deaths each year.

The study author Dr Erikka Loftfield, of the US National Cancer Institute, said: “Our study is one of the first to explore how drinking alcohol over the life course relates to both colorectal adenoma and colorectal cancer risk. While the data on former drinkers were sparse, we were encouraged to see that their risk may return to that of the light drinkers.”

One in 25 cases of cancer in the UK — about 17,000 each year — are caused by alcohol, research shows. Alcohol can cause seven types of cancer, including breast and bowel.

There are several reasons alcohol can cause cancer, including by converting to a toxic chemical called acetaldehyde, which damages cell DNA. Alcohol also changes cells in the mouth, making it easier for them to absorb harmful chemicals.

It also can increase levels of the hormone oestrogen, which can fuel the development of breast cancer.

The World Cancer Research Fund, a charity based in London, has said bottles of wine and beer should have warning labels stating that alcohol causes cancer.

It is running a campaign urging the government to require companies to put “bold and unambiguous” health warnings and calorie information on alcoholic drinks.

It is also calling for minimum alcohol pricing of 65p per unit in England, the level already in force in Scotland, as well as marketing and advertising restrictions on alcoholic drinks.