Send me Your FREE
Health & Nutrition Updates

Tips on ways to live longer, healthier and happier.
Enter your email below.

Ask Tufts Experts January 2014 Issue

Q. You recently wrote that “certain fibers can bind essential minerals and lessen their bio-availability.” Could you expand on that? It was of great interest to me, and I bet I’m not the only person wanting to know more.

A. Robert M. Russell, MD, emeritus professor at Tufts’ Friedman School, answers: “It is known that many foods that are high in fiber (particularly cereals) can inhibit the absorption of iron and zinc from the gastrointestinal tract. However, cereals that are high in fiber are also high in a substance known as phytate, which also has an inhibitory effect on these minerals’ absorption. So it is hard to pick apart how much of the inhibition of…

To continue reading this article you must be a paid subscriber.

Subscribe to Tufts Health & Nutrition

Subscribe and receive the next full year of Tufts Health & Nutrition for just $24. And access all of our online content - including years of back issues - free of charge. That's a savings of $12 off the regular rate. It's like getting 4 issues free!

Or subscribe for two years for $40 and save even more!

Get Tufts Health & Nutrition Digital

With 12 months of Tufts Health & Nutrition DIGITAL and get instant access to digital editions of current and past issues that you can download and save in PDF format to your PC, Mac or mobile device. You will also get unlimited access to everything on the site.

Subscriber Log In

Forgot your password? Click Here.

Already subscribe but haven't registered for all the benefits of the website? Click here.