Ask the Experts

Q: After reading the list of whole grain foods and refined grain foods in...

Answer : The lead researcher on that study, Nicola McKeown, PhD, a scientist in Tufts HNRCA Nutritional Epidemiology Program and program director of Nutrition Epidemiology at the Friedman School, explains...

Q: I have been using psyllium to clean out my system. Do you have...

Answer : Robert M. Russell, MD, professor emeritus at Tufts Friedman School, answers: From a nutrition point of view it is not so much an issue of cleaning out but rather to achieve regular bowel movements.

Q: Our local co-op has started carrying coconut palm sugar, saying it contains many...

Answer : Alice H. Lichtenstein, DSc, director of Tufts HNRCA Cardiovascular Nutrition Laboratory, says...

Q: You recently advised not to take more vitamin A than is in a...

Answer : Elizabeth Johnson, PhD, a scientist in Tufts HNRCA Carotenoids and Health Laboratory, replies, Vitamin A in supplements may come from retinol...

Q: My family is vegan, and we sometimes use faux meat products. Lately Ive...

Answer : Alice H. Lichtenstein, DSc, director of Tufts HNRCA Cardiovascular Nutrition Laboratory, responds, It depends on what has been added to the faux meats...

Q: There are many food products using the term natural. What does that really...

Answer : The term natural is being used a great deal-its a very popular trend in labeling- but it means absolutely nothing, says James E. Tillotson, PhD, MBA, professor of food policy and international business at Tufts Friedman School.

Q: Does raw oatmeal, mixed with plain non-fat yogurt, have the same health benefits...

Answer : No need to change your morning routine!

Q: What is your opinion of the claim that low-level laser therapy can be...

Answer : Wed be skeptical of any treatment that claims to be good for almost anything that ails you.

Q: Some hard candy says, sugar free. But it also says, 15 mg sugar...

Answer : The candy contains no sugar of the sort youd find in a sugar bowl, but does contain a sweetener such as xylitol.

Q: Does the sugar in fruit have the same effect in your body as...

Answer : Irwin H. Rosenberg, MD, University Professor of Nutrition and Medicine at Tufts and editor of the Health & Nutrition Letter, replies, Fruits may have more fructose than sucrose (table sugar), which has a slightly different metabolism...