Unless careful, you may endanger your health when eating out of metal cans.
Think how convenient it is to have ready canned food ingredients in the fridge. All that you have to do is to toss together some baked beans, ready rice/pasta, diced potatoes, a few cut veggies, all at one go from the fridge, add a few chunks of meat if you wish, and your meal is hot and ready.
Hot and ready, but not healthy.
Harmful additives in canned food
All canned food contain harmful additives such as artificial sweeteners, preservatives, coloring and flavoring to make food last longer, keep fats emulsified, and look and taste better. Some of these additives like monosodium glutamate, aspartame are carcinogenic. Some artificial colors added to the foods to give them an appealing look are erythrosine (red), canthaxanthin (orange), amaranth (Azoic red), tartrazine (Azoic yellow) and annatto bixine (yellow orange). You can find out from this link what’s on the list of preservatives, coloring and flavoring that’s currently on the red alert and why they should be avoided in the interest of good health.
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Some of the other commonly used food additives and preservatives are sodium nitrate, propyl gallate, butylated hydrozyttoluene (BHT), butylated hydroxyanisole (BHA), potassium bromate, potassium sorbate, sodium benzoate, etc. Many of these chemicals are not only hard to pronounce/remember, they are hard on the body as well.
BHA and BHT delay rancidity in foods that contain oils, such as cereals, chewing gum, vegetable oil, and potato chips. Remember the chemicals are carcinogenic.
Benzoates can trigger the allergies such as skin rashes and asthma as well as cause brain damage.