Well, I personally believe that fasting every week or fortnight is beneficial, animal research has proven it conclusively, good thing is that now human studies are also confirming the same findings.
http://today.reuters.co.uk/news/newsArticle.aspx?type=healthNews&storyID=2006-04-04T224055Z_01_SCH481569_RTRIDST_0_HEALTH-EATING-LESS-DC.XML&archived=False
http://www.nytimes.com/2006/04/05/health/05diet.html?_r=1&ei=5094&en=ca695744bcdb8aeb&hp=&ex=1144209600&adxnnl=1&partner=homepage&adxnnlx=1144235135-nqQ+OXjje1xIKrs2Wu9QsQ&oref=slogin
