RDA & DRI

There have never been documented cases of nerve damage caused by vitamin B6 at doses of less than 500 milligrams a day. Please provide me with the documentation that says otherwise. Three hundred milligrams a day of vitamin B6 is safe and has been documented over and over to cure carpal tunnel. Please do...

Hi, I have heard that it is not good for you to take iron pills because of the free radicals (I'm not sure if it's correct English). Is this true? I have now got a serum iron of 6 and I understand it is not good. Is there a better way of getting compliments (if...

Does cooking destroy vitamin C? Vitamin C is the most easily destroyed vitamin there is. It is destroyed by oxygen, heat (above 70 degrees Fahrenheit) and it leaks out into the cooking water because it is a water-soluble vitamin. Vitamin C is more stable in baked foods as it won't leak out into cooking water. To...

I am taking a nutrition course this semester and my professor mentioned that the RDA is doubled what is actually required for a few reasons, one being to ensure there are no deficiencies and the other because some vitamin supplement manufacturers lobbied to keep it high, so we will purchase their product. Her second reason...

I am a 33-year-old married mother of one. I have what I feel is an embarrassing and possibly life-threatening disorder. Some years ago I was diagnosed as being anemic. The iron level was so low that the doctor asked if I ate or craved anything unusual. I told him that I crave and chew...

I am a young student presently in the 9th grade. Your site is awesome! I am doing a project in biology class and I chose to do it on vitamin A. Your site was the only one that had some vital information on vitamin A. I was hoping that you could somehow give me...

Thank you for your common sense approach to calcium supplements. We have been trying to force these lead-containing products off of the shelves or at least to force the manufacturers to disclose the contents to unsuspecting consumers of these products. I am interested in any information that you may have on this topic. Bone meal...

I've seen Chromium Picolinate advertised recently as a "metabolism boosting" diet supplement. Is there any merit to this claim? No. Initially there was some speculation that since chromium is a component of the hormone insulin that additional chromium would enhance insulin's ability to break down glucose. Research has not supported this theory.

We are the Lebanese Osteoporosis Prevention Society (LOPS). Our concern among others is to provide awareness to our society about osteoporosis and how to prevent it. We are very interested in your articles about osteoporosis and the optimal calcium intake. We would like to have documents, questionnaires or protocols about the detection of the...

My daughter who is 14, is an ovo-lacto vegetarian. I support this and between the two of us, we try to make sure she receives the nutrients she needs. She has been eating this way for about 4 months. Recently she has developed cracks in the corners of her mouth. My older daughter had the...