I have done some minor research , not of specific vitamins and bio availability, but of the need for micro-nutrients. Biochemistry is something i am interested in, and things like proteins, enzymes etc.
its just a fact that statistically, the majority of people do not intake sufficient vitamins and minerals through their diet. It is better to eat well, but eating well and taking vitamins are not mutually exclusive.
quote: While most nutrition experts agree that a balanced and nutritious diet is the best way to obtain needed nutrients, the researchers in this commentary point out that many Americans have a less-than-perfect diet — long on calories and short on nutrients — and the vast majority are not getting enough of several important vitamins and minerals.
“It’s naïve to ignore the fact that most people have micronutrient inadequacies, and wrong to condemn a daily supplement that could cover these nutritional gaps safely and at low cost,” said Balz Frei, professor and director of the Linus Pauling Institute, and a biochemist in the OSU College of Science.
“There’s strong evidence that a multivitamin/mineral supplement supports normal functioning of the body and helps improve overall health, and may even help lower chronic disease risk,” Frei said. “It’s irresponsible to ignore decades of nutrition research and tell the people of the United States they have no need for a supplement that could be so helpful, and costs as little as $1 a month.
“And if they have a poor diet, people should try to improve that as well,” he said. “The two are not mutually exclusive.”
http://lpi.oregonstate.edu/feature-stor ... s-far-overso, yes i take vitamins, especially D in the winter.