Dear Dr. Gourmet,

Q: How many milligrams of potassium would be acceptable in a recipe if you are trying to bring your potassium levels down?

A: One of the most common areas where we have folks restrict potassium is when they have kidney problems. The most common diet that is recommended in such cases is 2 grams of potassium per day (2,000 milligrams). All of the Dr. Gourmet recipes now include potassium levels in the Nutrition Facts section. Daily Potassium Levels

Q: What are the foods to avoid for a person with diverticulitis?

A: A good healthy Mediterranean style diet is all you need. The higher the fiber the better. Here’s a link to a recent answer to this question from our Ask Dr. Gourmet Newsletter: Diverticulitis

Q: Lately I have been hearing a lot about the benefits of pomegranate juice from helping with prostate cancer to weight loss and lowering cholesterol. Is this the new “wonder food?” Also, cinnamon seems to be another fabulous supplement, lowering blood sugar is the main claimed help. I am wondering if any of these claims have any medical proof?

A: There is no “wonder food.” It’s a shame, because it would make our lives a bit easier, but it just isn’t true.

There is some evidence that pomegranate juice contains a lot of antioxidants, and we know that consuming antioxidants can help prevent disease. In most research, however, it’s difficult to make substantial claims without having large controlled trials. Time and again, small trials have shown positive results only to be disproven with large scale studies. While pomegranate juice has some encouraging small studies, it requires much larger research to prove this.

There is better evidence for use of cinnamon in folks with diabetes. These are also smaller trials, and there is actually conflicting research, with other researchers not being able to duplicate the results. Pomegranate Juice and Cinnamon

Q: Couldn’t I just substitute 250 mg Resveratrol capsules for my daily 8 mg dosage of Warfarin? Why should I, age 61, who also take 14 units of Lantus insulin for my diabetes, not benefit from the new findings about resveratrol?

A: Resveratrol is one of the substances that is found in wine and grape juice. There is a feeling that this might be a chemical that contributes to the benefits of drinking these beverages. The molecule has been isolated and is being tested in all kinds of non-human subjects now. While some of that research is encouraging, there is only a single human research study that is even close to positive. That is a small research study but did show some mild lowering of blood sugar. Substituting Resveratrol for Coumadin (warfarin)

Have a question? Send it to askdrgourmet@drgourmet.com and your question may be answered in this column. Read more Ask Dr. Gourmet questions.