I've generally accepted in the past, mainstream medicines viewpoint which facilitates a low fat diet to achieve weight loss, but what motivates me is how I felt so tired towards the end of a work day and how trapped I felt by indulging in a donut/muffin to ease my hunger pangs. The only drawback is the initial fatigue and headaches as I try to beat my carbo addiction. How long do the side effects usually last and are ther any tips to mediate the symptoms?