Hi iHs, I'm glad to hear you're healthy and happy.
The problem with waiting for definitive proof of what constitutes the most healthy diet is that none of us have that long to wait! The current approach to healthy diet advice is really only based upon hypotheses which themselves seem extremely resistant to proof by clinical trials.
I doubt there will ever be convincing evidence emerging from clinical trials because there are simply too many variables involved for clear unambiguous conclusions to be drawn. If, for example, you reduce saturated fat in your diet, you have to replace it with something else of equal calories to judge any effect. But is the effect down to less saturated fat, or more of the replacement?
Anthroplogical studies do consistently show an absense of diabetes, heart disease and obesity in populations eating a primitive diet without refined sugars and starches and I think that is pretty powerful evidence of the influence of such carbs on health.
Such evidence as there is on this and other fora do seem to consistently show significant improvements in all measureable criteria with sufficient carb restriction. It's been true for me and ultimately that's really the only evidence I need to see. If all risk factors are reduced, I can't think what other evidence I would need.
But, as ever, the decision on what is right or wrong will always be down to the individual.
Continued health and happiness to you and yours,
fergus