What does recommended daily intake mean?

Answer 1

How much your aloud. The RDA or recommended daily allowance, refers to the amount of the particular substance you should take in a 24 hour period. For instance, the recommended daily intake of vitamin C, is 60 mg. This means, that the average adults intake of vitamin C each 24 hours should be 60 mg.. Depending on the most recent research, these recommendations can change over time. For instance, vitamin E recommendations have decreased over the years, while vitamin D recommendations have increased. The recommendations are just guidelines for us common folk to follow. It is because some substances, when taken in excess, can cause health problems. The fat soluble vitamins (A, D, E for example), stay in your system longer and can accumulate faster, leading to a greater chance of toxicity. Water soluble vitamins, such as C, are passed though your system quite fast.