Just enough of everything...

Did you know that apples could be harmful to your health?  No, seriously.  Eat enough of them for long enough and you will most certainly have deficiencies in your diet and resulting health problems.  Well, the same is true for a lot of things: too much water or too little, too much food or too little, too much of a drug or too little...  Recently, people have started admitting that salt is not all bad.  Yes, evil, evil salt is no longer considered evil.  This article

http://www.menshealth.com/health/do-you-need-more-salt

focuses mostly on the iodine in salt (which is added, not naturally there).  Salt itself is good in certain quantities (recall the sodium-potassium pump from cellular biology class?), but too much can be harmful.  Like most every, take it in moderation.