Ever heard about this expression "brain food"? Omega 3 are supposed to help with brain function, and so do many natural products but today we'll focus on walnuts. It has been believed that walnuts actually increase one's intellect. Studies have proven that consumption of walnuts do help in promoting the brain function. The Doctrine of Signatures stated that because the shape of the walnut resembled the brain, the nut would be beneficial for all ailments associated with the head and brain, including headaches. Walnuts contain omega-3 fatty acids which increase the activity of the brain. Omega-3 fatty acids, coupled with iodine and selenium, add to optimum functioning of the brain. A lack of omega-3 fatty acids cause hyperactivity, irritability and tantrums. Supplementing children's diet with walnuts compensates the deficit in essential fatty acids and alleviates their mood. It is even applicable to adults who are battling depr