Including processed meats such as bacon, hot dogs, packaged ham, pepperoni and processed chicken breast to your diet can increase considerably the risk of having bowel cancer as well as lung, stomach, prostate and esophageal cancer. The reason why sodium nitrate is added to the previously mentioned processed meats is because it gives them that red color most people love, but it also adds some flavor and increases the shelf life of the product meaning they stay in the supermarkets for longer. MSG Manufacturers use add MSG to their products to add some sort of addictive flavor to certain foods that would have very little taste otherwise. The problem with MSG is that, despite making food taste better, it can provoke migraines, numbness, chest pain, memory loss, obesity and many more health concerns. Avoiding having products that contain MSG might be tricky but it's the best option. Trans-fats and Hydrogenated Vegetable Oils Trans-fats are mostly used to create semi-solid consistencies and are added to products such as biscuits, muesli bars, crisps, cakes and most fast food which is fried. This type of fat is known for increasing the risk of suffering from coronary heart disease, diabetes, high levels of cholesterol and obesity. Artificial Sweeteners These are used because they are cheaper than sugar and because they don't have as many calories yet are almost as sweet. They can be found in most sweet products such as juices, diet sodas and diet cakes. Artificial Colours and Other Preservatives These are used to add attractive colors to food, but they are known to increase the risk of various types of cancer, allergies and hyperactivity.