Peanuts are a legume and have a very high poly-unsaturated fat content, which can cause a number of problems.
Peanuts along with other legumes and grains contain Lectins and can be associated with gastrointestinal problems such as Crohn's disease, celiac disease, colitis and irritable bowel syndrome, as well as allergies and autoimmune diseases.
That being said, it is unnecessary to avoid them entirely. However I would suggest minimizing your consumption at least. On top of that, the very nature of a non-diverse diet can put you at risk for various nutritional problems.
Last edited by digitalsteel; 08-28-2013 at 04:19 PM.