Walnuts Improve Cardiovascular Health
Nuts are a time-honored component of the Mediterranean diet and may contribute to the lower risk of cardiovascular disease associated with the diet.
Regular nut consumption lowers total cholesterol and LDL (”bad cholesterol”) by 5 to 15%, which would tend to lower heart disease risk. Walnuts are particularly high in alpha-linolenic acid, an omega-3 fatty acid.
Bix over at Fanatic Cook links to three scientific studies showing that walnuts:
- improved arterial function in people with type 2 diabetes
- improved arterial function in people with high cholesterol and eating a Mediterranean diet
- decreased fasting insulin levels in people with type 2 diabetes
- decreased LDL cholesterol in people with type 2 diabetes who were on a low-fat diet
The “dose” of walnuts in these studies was 1–2 ounces (28–56 g) daily.
For good reason, nuts have a prominent role in both the Advanced Mediterranean Diet and Ketogenic Mediterranean Diet.
I don’t know Bix, but he or she seems to base many of his/her nutrition opinions on scientific principles, which I appreciate.
December 15th, 2009 at 8:22 pm
hi, it’s been said that delta-6-desaturase decreases markedly after age 40, and so conversion of ALA to beneficial eicosanoids doesn’t happen much. Is there something else in walnuts that accounts for the benefit? Or is D6D not really deficient after all?
December 16th, 2009 at 1:18 pm
Your guess is as good as mine, Ken. Probably better!
-Steve