Dr Peter Dingle Writes:
Having a handful of walnuts a day reduces the risk of developing diabetes type 2 by 24%. Walnuts are a good source of two essential unsaturated fatty acids, alpha-linolenic acid and linoleic acid. Other research shows that walnuts, with their unique nutrient profile, can play a role in also reducing cardiovascular risk factors and help with weight control. Diet not drugs!
http://jn.nutrition.org/content/early/2013/02/18/jn.112.172171.abstract