[abhinavm]

I had a similar problem, and in my case it turned out to be reactive hypoglycaemia.

It means that my body is insulin resistant, and when I eat anything that raises my sugar levels, the body starts pumping out more and more insulin till it reaches a point where the sugar levels fall below normal. So the body is hit by bad effects of high sugar, and then with bad effects of low sugar.

In my case the solution was to avoid sugars and refined carbs in breakfast. As Indians our breakfast contains a lot of carbs.

If I have eggs for breakfast, I can pretty much anything the entire day and not feel it. On the other hand if I have pancakes with syrup, I know I am in for an episode of hypoglycaemia.

Also if I have sugar or refined carbs, having a fibre supplement (psyllium husk) with it helps.

Overall adding more salad and protein is what I would recommend if you also have this.

PS: For diagnosis go to an endocrinologist.