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Preservatives are used to increase the life of foods by controlling the growth of undesirable moulds, yeast and bacteria in food that can cause spoilage and illnesses. Most food is processed and packaged to stop it from going bad. These foods tend to be high in fat, sugar and calories. Eating too much processed food can lead to weight gain and other health problems.
Processed meat generally refers to meat preserved by curing, smoking or salting, or by the addition of preservatives. Examples of processed meats are ham, bacon, pastrami, salami, hot dogs and sausages. Processed meats are often high in fat and salt. Fish can also be preserved with salting, smoking or adding preservatives.
Curing and smoking have been used for thousands of years to preserve foods like meat and fish.
Preserving or pickling food with salt is an ancient practice. Salt contains sodium, a mineral that is needed to help maintain proper fluid balance in our bodies. Salt often contains iodine, which is also needed for good health.
The evidence is convincing that eating processed meat increases the risk of colorectal cancer. The reasons why eating processed meat increases the risk of colorectal cancer are currently being studied.
It is often difficult to determine the risk of cancer related to cured and smoked foods because they are often salted and cured foods like bacon may also be cooked at a high temperature. All of these may be factors in increasing cancer risk.
The evidence linking cured or smoked meats to colorectal cancer is strong, but it is limited for other types of cancer like stomach cancer.
Studies have linked eating large amounts of foods preserved by salting and pickling with an increased risk of stomach cancer. The incidence of stomach cancer is greater in parts of the world (such as Japan) where diets traditionally include foods that are salt-preserved.
Studies have shown that the rates of nasopharyngeal cancer are high in areas where eating salt-cured fish or meat is very common.
There is no evidence that suggests using small amounts of salt in cooking or flavouring foods affects cancer risk.
If you eat cured, smoked meats or processed meat or fish, have them in small amounts and less often.
Recurrence is always at the back of your mind. With the study, they’ll follow me for 10 years and that’s reassuring.
A clinical trial led by the Society’s NCIC Clinical Trials group found that men with prostate cancer who are treated with intermittent courses of hormone therapy live as long as those receiving continuous therapy.