In a study run at the Harvard School of Public Health, high-fat milk products were found to reduce the risk of type 2 diabetes and improve metabolism.  This is contrary to the longstanding belief that low-fat equals higher levels of health.  This finding is consistant, however, with other studies that find an associate of whole-fat dairy products and metabolic factures.  This finding relates trans-palmitoleic acid (a product of endogenous fat synthesis) at the highest levels reduced diabetes incidence by 60%.

In their analysis, higher trans-palmitoleate levels were significantly associated with:

• Lower body mass index (-1.8%, P=0.058)
• Smaller waist circumference (-1.8%, P=0.009)
• Higher levels of HDL cholesterol (1.9%, P=0.043)
• Lower triglyceride levels (-19.0%, P<0.001)
• Lower total cholesterol:HDL ratio (-4.7%, P<0.001)
• Lower levels of C-reactive protein (-13.8%, P=0.050)
• Lower fasting insulin levels (-13.3%, P=0.001)
• Less insulin resistance by homeostasis model (-16.7%, P<0.001)
  
  
My feeling has long been that milk (and dairy products) have a beneficial effect on health, including quicker muscle recovery after exercise, better metabolism (as confirmed) and greater nutrition (due to a more well rounding intake of nutrients).  Although high-fat milk may not be recommended for other reasons with diabetes, I do recommend considering milk with fat (even 2%) as an option to improve overall health.  It should be combined with a well rounded daily diet and regular exercise. 

Sorry, I am not giving you the right to eat lots of high fat, poor nutrition value foods for your diabetes.