While many people try to eat well to stay healthy, some foods might do more harm than we realize. Surprisingly, certain everyday items in our diet could increase our risk of cancer without us knowing it.
I’ll explore 18 foods that may raise cancer risk in this article. Some of these might shock you, as they’re common in many people’s diets.
Processed meats

Hot dogs, bacon, and deli meats are high in preservatives. These chemicals can damage cells in your body. Eating too much processed meat has been linked to colon cancer. Try to limit these foods and choose fresh meats instead.
Microwave popcorn
The bags used for microwave popcorn contain chemicals that might cause cancer. When heated, these chemicals can get into the popcorn. It’s safer to make popcorn on the stove or use an air popper.
Soda
Sodas are full of sugar and artificial colors. Drinking too much soda can lead to weight gain, which increases cancer risk. The caramel color in some sodas might also be harmful. Try water or unsweetened tea instead.
Canned tomatoes
The lining in some cans contains BPA, a chemical that might cause cancer. Tomatoes are acidic and can leak this chemical into the food. Choose fresh tomatoes or those in glass jars when you can.
Farmed salmon
Farmed salmon often contains more chemicals than wild salmon. These fish are fed unnatural diets and might have more pollutants in their flesh. When possible, choose wild-caught salmon instead.
Potato chips
Potato chips are often high in fat and salt. When cooked at high temperatures, they can form a substance called acrylamide, which might cause cancer. Try baked chips or veggie chips as a healthier snack.
Hydrogenated oils
These are often found in processed foods and some margarines. They contain trans fats, which can increase cancer risk. Check labels and avoid foods with “partially hydrogenated” oils.
Grilled red meat
Cooking red meat at high temperatures can create chemicals that might cause cancer. This happens when meat is charred or burnt. Try to grill less often, or use lower heat and flip meat frequently.
Artificial sweeteners
Some studies suggest that artificial sweeteners might increase cancer risk. While more research is needed, it’s best to use these in moderation. Try natural sweeteners like honey or fruit instead.
White flour
Refined white flour has been stripped of its nutrients. It can cause quick spikes in blood sugar, which might promote cancer cell growth. Choose whole-grain flour and bread when possible.
Pickled foods
Some pickled foods contain nitrates, which can form harmful compounds in your body. They’re also often high in salt. Enjoy pickled foods in moderation and try making your own with less salt.
Alcohol
Drinking too much alcohol can increase your risk of several types of cancer. It’s best to limit your intake. If you do drink, stick to recommended amounts – no more than one drink a day for women, two for men.
Smoked foods
Like grilled meats, smoked foods can contain cancer-causing substances. These form when food is cooked at very high temperatures. Enjoy smoked foods as an occasional treat rather than a regular part of your diet.
Non-organic produce
Some non-organic fruits and vegetables might have pesticide residues. While the link to cancer isn’t clear, it’s best to wash produce well. If you can, choose organic for foods known to have high pesticide levels, like strawberries and spinach.
Refined sugar
Eating too much sugar can lead to weight gain and inflammation. Both of these can increase cancer risk. Try to cut back on sweets and sugary drinks. Choose natural sources of sugar, like fruit, instead.
Excess salt
Too much salt in your diet might increase the risk of stomach cancer. Many processed foods are high in salt. Try to cook more meals at home where you can control the amount of salt used.
Vegetable oils
When heated to high temperatures, some vegetable oils can form harmful compounds. These might increase cancer risk. Use oils with high smoke points like avocado oil for cooking at high heat.
Burnt toast
When bread is toasted until it’s very dark or burnt, it forms acrylamide. This is the same substance found in overcooked potato chips. Try to toast bread to a light golden color instead of dark brown.
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