Dear Dietician: Cold and flu season

Dear Readers,

It is estimated that the common cold is responsible for 150 million missed workdays each year in the United States (1). With cold and flu season fast-approaching, many of us will be headed to the nutrition supplement aisle in an attempt to ward off these nasty viruses. But do these supplements really work? We investigated four of them, and this is what we found:

Elderberry- In one...