Over cooking of foods can destroy vitamins in foods. Even the preservatives used in canned food destroy the vitamins. So try to use fresh/frozen fruits and vegetables instead of canned ones. Also do not over cook vegetables. Washing vegetables is a smart idea but do not wash vegetables after cutting them. While eating fruits like apples do do not remove the skin as the pectin is found in skin. Instead of using canned beans, soak the dried beans for 12 hours and boil them. It is a tedious work but you if you want to eat "good food", it needs some hard work to please your stomach..
All foods has a vitamins and minerals that nourished our body.
GMO foods asummably have the same vitamins as the equivalent non-GMO foods.
On meat, salt can preserve food.
Of course, a vitamin supplement has vitamins Many foods have vitamins in them. See link below
Mostly fruits.
By using a fridge
We preserve food because it helps the food last longer
Yes, there is a difference. Whether man-made or "natural," most vitamins on the market today are synthetic. They are isolated vitamins that lack important phytonutrients the body needs to most effectively use the vitamins. While the best way to get vitamins is through eating a healthy diet, whole-foods vitamins are made from foods and contain the phytonutrients that are needed with the vitamins.
No, diets high in unenriched processed foods are diets low in B vitamins.
Yes, fresh is very good for you. You get to eat the vitamins that are still in fresh foods. Cooked foods have less vitamins in them.
Vitamins A, D, E and K!
Protiens, carboohydrates and vitamins.