Interesting.  Joey was given a munchkin doughnut by the neighbour this afternoon.  After  couple of days of improved behaviour, his behaviour was certainly worse late afternoon and early evening about 2hrs after having ate it.  First of all, there were some minorish problems over soccer, when he makes a mistake and pouts. He had problems with his bloody Mine Craft game and then got upset and sat on the stairs, tearfully proclaiming that he was a failure.  Now, he was tired after a late night last night so it is impossible to say what the relationship was between the doughnut and the worsened behaviour but............ That is, strange enough, good news as it would indicate that it really is all about the food.  We shall see.