DEAR DR. BLONZ: I have been grinding my flaxseed and storing it in the refrigerator for use on my breakfast cereal. I typically grind enough to last a month or so. However, a recent article about how the omega fats in flaxseed can oxidize suggested I should not continue this routine. Is this a correct assumption? — F.S., Berkeley, California
DEAR F.S.: Unground flaxseeds last a while; be sure to check the expiration date on this and any product. Grinding and storing them in a well-sealed container in the refrigerator should be fine, but consider shifting your storage to the freezer, as this would provide an extra measure of protection from heat and light. As a general rule, the closer to the time of use that you grind the seeds, the better.