Why a cancer warning should accompany some foods
Smoking causes lung cancer. After a few years, cigarette packets now have prominent health warnings that alert us to the risk.
The World Cancer Research Fund has compiled convincing evidence that shows regular consumption of certain foods and beverages increases cancer risk.
Front-of-pack labels are a great way to alert consumers about the cancer risks associated with certain foods and beverages.
Cancer in Australia: A snapshot
The absolute risk of getting cancer is very low. In Australia, around 120,00 new cancer cases were detected in the past year. This is based on a population of close to 23,000,000.
In other words, the lifetime risk for a male is 1 in 3 and for a female it is 1 in 4. In Australia, cancer is the most common cause of injury and disease, resulting in the loss of more than 550,000 years due to illness, disability, or premature death.
Last year, the most common cancers diagnosed were lung cancer (11280 cases), lung cancer (11280 cases), and melanoma (12510 cases). Although many of these cancers have positive treatment outcomes, approximately 117 people die each day from cancer.
Good news: between 1982 and 2010, relative five-year survival rates after a cancer diagnoses increased in three of the most common cancers. These were prostate cancer (58%), bowel cancer (48%), and breast cancer (72%).
There is more that can be done to either prevent cancer from developing in the first instance or reduce the chances of it returning.
What foods and beverages increase cancer risk?
There is compelling evidence to suggest that alcohol can increase the risk of breast cancer in pre- and after-menopause, as well as cancers of mouth, throat, and (in males) the bowel. recommends that men limit their alcohol intake to two drinks per day and women to one, but there is no safe amount of alcohol for breast cancer.
Eating more than 500 g of cooked meat per day is dangerous. Every 100-gram increase of red meat per day increases the risk of bowel cancer by 17%.
A meta-analysis of thirteen studies found that every 50 grams of processed meat consumed daily increased the risk of bowel cancer by 18%.
Alcohol, salt, and processed meat increase the risk for some cancers. Image from shutterstock.com
Evidence suggests that eating salty or salt-preserved food is a probable cause of stomach cancer. The World Cancer Research Fund advises avoiding these foods and not use salt in preserving food, limit consumption of processed foods that have added salt, and aim for a low sodium intake (less six grams or 2.4g per day).
There is evidence to suggest that eating foods rich in dietary fiber, such as vegetables, fruits, wholegrains and legumes can help reduce the risk of developing bowel cancer. For every 10 grams of fiber you consume daily, your risk drops by 10%.
Foods rich in folate such as legumes, seeds and citrus fruits, along with fortified cereals and breads, have been linked to a lower risk of pancreatic and bowel cancer.
How does a labeling system work?
Food Standards Australia and New Zealand could manage the food labelling process in the same manner as it does currently with health claims. These are voluntary statements that food companies make to refer to a link between food and health.
FSANZ launched a new standard in January to regulate the health claims that are made on food labels and in advertising. There are two types of health claims: general and high level claims.
Health claims at the general level refer to “something in” food and its impact on a particular health function. For example, “calcium is good bones”. A high-level claim is a reference to “in” food, and its relation to a serious condition or intermediate factor or risk indicator for that condition. As an example:
