Readers interested in weight loss sent in the following questions about medications, oatmeal, calories and exercise as part of our ongoing series about shedding excess pounds.

Answers are provided by Jean Bauch, a registered dietitian and coordinator of Unity Health's Diabetes, Weight Loss and Nutrition program, and by Sean Stark, an exercise physiologist at Unity Cardiac Rehabilitation.

Question: Why does the popular press still repeat the old "calories in must equal calories out" equation, even though journalists such as Gary Taubes have shown quite convincingly that research does not back that up? Rather, carbohydrate calories produce body fat much more readily than fat calories do. I believe we all should emphasize reducing carbs — especially easily digested, highly refined carbs, to lose weight (and not suffer hunger pangs).

— J.L., Irondequoit

Answer: Bauch: Fat is the storage of energy, and the body cannot create more energy than it takes in, hence calories in must equal calories out. But controlling appetite is also a factor in weight control, and studies suggest that the content of our diet may play a part. There is growing evidence that higher fiber, fewer processed carbohydrates and the inclusion of healthy fats may help the body better regulate appetite. Today's healthier weight-loss plans recommend these types of changes.

Question: Many medications (such as antidepressants) cause significant weight gain. What can be done to stop that? Even after discontinuing the medication, the weight remains. It's difficult to lose, especially if we are older and lack the energy or motivation to exercise as we should.

— L.C., Greece

....continued