Healthy Eating

Nutrition ratings using gold stars next to price labels on grocery shelves might lead to modest but measurable improvements in consumer choices, says a new study. Published in the journal Food Policy, its the most rigorous independent analysis of point-of-purchase nutrition labeling. Because of the availability of data, researchers focused on the Guiding Stars system introduced in 2006 by the Hannaford supermarket chain and now licensed for use in more than 1,800 stores. Compared to…

In a new survey that has organic marketers seeing opportunity, fewer than 20% of consumers were found to account for almost half of all organic food purchases. Information Resources Inc. and SPINS surveyed 5,000 consumers and identified two small segments-totaling just 18% of the population-responsible for 46% of all organic and so-called natural food sales.

With some 50 million Americans afflicted by arthritis, chances are that even if you dont suffer from the disease, your spouse or someone else close to you does. But theres hope for this painful condition. Arthritis patients have a range of medications available, and today most know the benefits of exercise for improving their condition. While once arthritis sufferers were told rest is best, research at Tufts and elsewhere has shown that strength training in particular can help prevent and reduce arthritis symptoms.

ADiane McKay, PhD, a scientist in Tufts HNRCA Antioxidant Nutrition Laboratory, answers: Since carob and chicory are plant-based, they both contribute to our daily intake of phytochemicals. Chicory (Cichorium intybus) is one of the richest dietary sources of caffeic acid (not to be confused with caffeine), while carob (Ceratonia siliqua) is high in tannins, as well as the minerals calcium and potassium. …

A. Adela Hruby, PhD, MS, MPH, who recently completed an American Heart Association Predoctoral Fellowship at Tufts Friedman School, responds: According to the USDA Nutrient Database, per gram, both raw spinach and frozen spinach (unprepared or prepared by boiling and draining), contain around the same amount of magnesium (about 75-82 milligrams per 100 grams of spinach). However, if you go by a typical serving of one cup, rather than by weight, then frozen spinach, because its…

A. Brittany Loriquet, a dietetic intern in Tufts Frances Stern Nutrition Center, explains: Vitamins can be derived from food products or produced synthetically in a lab. Most multivitamins are made from synthetic vitamins, which are cheaper and easier to use than those from natural foods. There is no difference in the chemical structure between the synthetic form and naturally derived forms. To make a multivitamin, the vitamins and minerals are ground into a fine powder. …

A. Lisa Massini, a dietetic intern at Tufts Frances Stern Nutrition Center, answers: Whole-grain pasta is naturally darker than white refined pasta due to the bran (the hard, fibrous outer layer of a grain) that it contains. This color difference is not due to added colors. Whole-grain pasta contains a significantly larger amount of fiber than white pasta (6 grams per serving versus 2 grams serving). It is also richer in iron and magnesium; however,…

A. Jeffrey B. Blumberg, PhD, director of Tufts HNRCA Antioxidants Research Laboratory, replies: Casein, the protein in cows milk, does bind to chlorogenic acids, the principal bioactive constituents of coffee (other than caffeine). Depending on the amount of milk added to the coffee, this may decrease the absorption of chlorogenic acids into the body, although its ultimate impact on antioxidant activity or other actions is not clear. There do not appear to be any human…

A. Our source for this information was the National Library of Medicines MedlinePlus, which explains: Warfarin (Coumadin) is used to slow blood clotting. There are several reports showing that taking glucosamine hydrochloride with or without chondroitin increases the effect of warfarin (Coumadin) on blood clotting. This can cause bruising and bleeding that can be serious. Dont take glucosamine hydrochloride if you are taking warfarin (Coumadin).…

A. Erika Hval, a dietetic intern at Tufts Frances Stern Nutrition Center, answers: The prickly pear cactus, sometimes referred to as the cactus pear (Optunia spp.), has been touted for a variety of health-related benefits from treating diabetes to alleviating alcohol-induced hangover symptoms. Found in Mediterranean and subtropical African and American zones, cactus pear plants are characterized by flattened stems (cladodes) and brightly colored, sweet-tasting fruits. In general, the stems supply high amounts of pectin…