What Are 10 Foods You Should Never Eat?

The 10 foods that people should never eat include soda, artificial sweeteners, shelf-stable condiments, certain types of fish, processed meat, microwave popcorn, bagels, stick margarine, dairy and deep-fried foods, according to HowStuffWorks. Experts suggest that people avoid soda because of the high sugar and calorie content.

Artificial sweeteners are on the list of foods not to eat, which makes diet sodas even less attractive. Although many consider artificial sweeteners to be a healthy alternative to sugar, they can cause weight gain, cardiovascular disease and Type 2 diabetes. Shelf-stable condiments include foods such as mustard, relish and ketchup found in individual packets or bottles at diners and restaurants. Manufacturers add anti-foaming agents, preservatives and additives to those condiments so that they do not require refrigeration.

People need to avoid certain kinds of fish and processed meats. Both swordfish and albacore tuna contain high levels of mercury, which can cause brain and nervous system problems if consumed in excess. Processed meats such as bacon, hot dogs and deli meats contain preservatives and nitrates, making heavy eaters of this sort of food more likely to develop Type 2 diabetes. Microwavable popcorn is also on the list and is worse than movie-theater popcorn. Microwavable popcorn uses chemicals and flavoring agents to give it its buttery taste and coat the inside of the bag, and these ingredients increase the risk of developing respiratory problems and possibly Alzheimer's disease.