This is an interesting idea.  Do you have a reference for it?

In a message dated 1/31/2002 2:26:56 AM Eastern Standard Time,
[log in to unmask] writes:


> Appetite at breakfast can be a marker of insulin sensitivity.  Generally the
> lower one's fasting blood sugar (less than 70 would be excellent most
> people
> are above 80) the better the insulin sensitivity, glucose tolerance etc.
> and
> the more likely they are to have a good appetite at breakfast.  This is
> probably a large reason why as people age their early morning appetite
> tends
> to diminish whereas lean children and teenagers are more likely to wake up
> with a strong appetite.
>