A patient of mine told me yesterday that she thought too many of my posts were negative:  this supplement doesn't help, that medication doesn't work, this intervention doesn't make a difference.  She's right.  A lot of my posts are negative.  There are two reasons for that.  One is that we're constantly bombarded by advertisement and bogus information in the mass media about the latest and greatest medical wonder, usually long before any evidence exists about its effectiveness.  So I partially s...