I would argue that whether there is relationship between saturated fat and the
risk of developing type 2 is the least important finding for most people on this forum as they have already been diagnosed. What would be more relevant would be a) factors affecting HbA1c etc. (as listed by
@Sapien) and b) factors affecting cardiovascular events and mortality (as people with diabetes are known to be at higher risk).
p77 Saturated fat intake and CVD outcomes
Randomised controlled trials
CVD mortality No effect Adequate evidence
CVD events Effect Adequate evidence The direction of the effect indicates that reduced intake of saturated fats lowers the number of CVD events
Prospective cohort studies
CVD mortality No association Adequate evidence
CVD events Insufficient evidence
p81 Saturated fats substitution with PUFA or PUFA and MUFA and CVD outcomes
Randomised controlled trials
CVD mortality No effect Adequate evidence CVD events Effect Adequate evidence The direction of the effect indicates that substitution of saturated fats with PUFA lowers CVD events
Prospective cohort studies
CVD mortality Association for saturated fats substitution with PUFA or PUFA and MUFA on CVD mortality Limited evidence The direction of the association indicates that substitution of saturated fats with PUFA or PUFA and MUFA lowers CVD mortality
CVD events No evidence
It's also worth reminding ourselves that these findings are based on the general population and results may differ for specific populations such as people with diabetes.