RDA & DRI

I am taking a supplement of 1 gram of vitamin C as an antioxidant. What are the collateral effects related to the excess of Vitamin C? First of all, it turns your urine yellow. It makes your urine more acid, which decreases urinary pH and the possibility of urinary tract infections. Beyond that 1 gram (1000...

Is it important to take calcium with vitamin D or if you drink milk would you get a sufficient amount from that? I am nearing 70. Since you are almost 70 years old, I recommend you drink 4 cups of milk or the equivalent in calcium-rich foods per day so that you consume 1,200 milligrams...

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...

My question is regarding the B6 Vitamin. My husband & I are trying to conceive. I'm looking for the "natural" signs prior to ovulation. I read that the B6 vitamin if taking approximately 200 milligrams per day can help increase the cervical mucus. Is this true? Thanks in advance!! Intakes of pyridoxine above 100 milligrams for...

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 familiar with the Recommended Dietary Allowance, but I don't really know if I am getting enough from what I eat. Is there any way to find out if I am actually taking in the RDA? One way to know if you are getting the Recommended Dietary Allowance (RDA) for all the nutrients you...

I couldn't find this issue addressed on your webpage. I hope this isn't a duplicate question. Is there any nutritional significance to the habit of chewing ice? I have heard that dentists advise against it because it could damage your teeth. Is this true? However, what I am really wondering is if it signifies any deficiency...

What is your opinion of colloidal minerals? Thanks for your help! Colloidal minerals are molecules of minerals suspended in a liquid. The particles are not dissolved and may carry an electrical charge which enables them to combine with another particle to make a compound and precipitate out as a solid. These electrically charged particles are...

While looking at my weight, age and the certainty of increasing medical problems, I've been working on a database that I can use for myself that will allow me to track things like track high blood pressure, blood sugars, medications, exercise, meals and the specific foods. While looking at the food section of the database,...

I was interested because I have a question about a skin condition I am experiencing. I have seen a dermatologist for this problem, but I was told there is nothing I can do for the existing areas. But, the dermatologist said I could prevent future scarring by the constant use of sunscreens. I am female,...