The third annual all-Q&A issue of the Harvard Health Letter offers answers to readers' serious, whimsical, and just plain curious questions ranging from whether vitamin B12 supplements are safe to what causes excessive belching, how coffee can help with migraine, and what to do about an asymptomatic H. pylori infection. All of the answers are provided by doctors from Harvard Medical School.
Most issues of the Harvard Health Letter answer one or two reader questions in the "By the Way, Doctor" feature. The newsletter's May 2010 issue answers 13 such reader questions:
As an added feature, you can see and hear three of the doctors answer their questions at www. health.harvard.edu/healthextra.
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