As an example – taking Vitamin C with Iron reduces the effectiveness of both. Taking too much magnesium can deplete calcium and vice versa. You should avoid compensating for bad foods. An example would be the healthy salad that is laden with fattening dressing. Although it is a good idea to use butter or oil sparingly your body still needs a bit of fat or oil in order to absorb vitamins properly. It is also a bad idea to reheat or recycle cooking oil to cook with as it contains carcinogens that can cause cancer.

