Guys.
You have helped me see that it is not a big problem. I especially like Garland diet and vitamin route. It canot hurt.

My son is starting to realize that junk food and high-sugar foods are not good for him. He is shifting very slowly to bran and whole wheat foods and snacks. But again there is another problem with him. He will not eat most of what his mom cooks. She has to prepare a different dish for him most of the time although our other teenage kids enjoy her food.

A few years ago his confidence was so loooooow. He would almost weep whenever a little inconvience happens. But I have found out that "what-if" scenarios were very good for him. They expose him to mental pictures of baaaaad stories and sort of make him less sensitive and wont take every little thing as TEOTWAWKI

I used to leave him at school some afternoons and was sometimes too busy to pick him early enough. When I arrived his eyes were red and wet. And his younger brother - with me in the car - would always tease him about that.

Being a prepared person , I started to think: what if something really happens to me and I dont arrive at all. This kid will just freeze in the school parking and die there.

We discussed such possibilities and we found the best sollution for him to walk (about half a mile) to the nearest convenient store and stay there, call a relative, buy a bottle of water, whatever. And for him to be prepared for such possibilities, he should always carry some cash to buy whatever.

These "what-if" stories resulted in a boost in his confidence. And he is not the psychological black hole he used to be. However, he liked the idea too much and his trips to that store has added more junk food to his diet. It shows that life is not all perfect and our successes are not always complete. But at least he won't wet his pants in the school parking.

He is making some progress, given the rewards that I use as boosters. Now driving the car is another reward he can expect when he shows more progress. But I think that additional dietic and behaviourial guidance will be a weclome help.

More thoughts and ideas are still welcome.
Thanks everyone.