Be on guard for the attack of the health maniac.  This is the person who you meet in the grocery store and they begin immediately to criticize your purchase choices.  They give you dirty looks if they see you eating something that is clearly unhealthy, but which you are thoroughly enjoying.  They have completely divorced the idea of enjoyment from the world of food and eating.

The health maniac always has advice that they have recently read in a magazine or newspaper article somewhere and they are shocked if you doubt the veracity of their information.  They insist that every one should obviously be following the same alternative health protocol they are because it is simply evident to them that everyone needs it.  The health maniac thinks and stresses about their health to the point that they are usually hypochondriacs, always worried about this or that minor symptom and  what it could mean and what they could take or who they could see to address the problem.

Here is the funny thing.  The health maniac is usually not all that healthy.  Also the health maniac is not always the person with what you might think of as the most extreme ideas about health, but they take the ideas they do have and try to push them on everyone.