A couple of things you should keep in mind is that you may have a greater need for certain nutrients due to your unique biological make up, and this is almost impossible for doctors to figure out, because they get almost no nutritional training in their education. The RDAs are the absolute minimum recommendations to keep the "average" person from developing an out and out deficiency disease. So unless you can find a holistic person to work with, you'll have to do a lot of the detective work on your own. The good news is that you are pretty safe in attempting megadoses of most water soluble vitamins, because anything you don't need will be gotten rid of in your urine. Be careful of megadosing fat soluble vitamins like A and D though.
Another thing is that soils are depleted, and its not hard to find studies showing that even organically grown fruits and vegetables contain much lower percentages of nutrients than they did in our grandparents' day. If you are a person with a greater need for certain vitamins, you may not be able to get all you need from your diet alone.
Another thing is that soils are depleted, and its not hard to find studies showing that even organically grown fruits and vegetables contain much lower percentages of nutrients than they did in our grandparents' day. If you are a person with a greater need for certain vitamins, you may not be able to get all you need from your diet alone.