Ally,
What that study shows is that carb reduction benefits T2s at least for the duration of the study. Most of us who have reduced carb would agree with that conclusion, & you have repeatedly advised carb control.
Presumably NONE of the subjects suffered adversely, or that would have been stated.
It is well known that higher BGs are the cause of all the health hazards for diabetics.
The report caveat is simply that they do have have data for long term carb reduction.
If short term data indicates benefits, surely they should pursue long term data.
Rather than therefore put the report in the back of the filing cabinet, "they" should set about gathering long term data to see if there are any long term negatives.
An alternative diabetic diet should be drawn up based around restricted carbs, taking into account the possible restriction of vitamins & minerals, & excess protein & fat, so that diabetics have a professionally guided option for BS control.
Such a diet should indicate side effects & counter indications that should be reported to the HPs.
If vitamin/mineral deficits are expected, there are enough diabetics for the manufacturers to justify a diabetic multi v/m supplement. I take the standard supplement anyway.
For me, the short term effect has been restoration of my active life. That has wonderfully corrected the long term effect of the NHS diabetes diet that was leading to neuropathy & disablement. i.e. the end of my active life.