The arginine content of nuts may explain their metabolism-boosting effects—though, in a list of the top food sources of arginine, nuts don’t even make the top ten.
This is the sixth video in my seven-part series on this fascinating phenomenon. I reviewed the balance of evidence as to why nuts don’t tend to contribute to weight gain in Nuts and Obesity: The Weight of Evidence. Next, I introduced two theories on Solving the Mystery of the Missing Calories, both of which were put to the test in a study on peanut butter (see Testing the Pistachio Principle). Then came an elegant study using walnut smoothies in Testing the Dietary Compensation Theory, followed by the big reveal in Testing the Fat-Burning Theory. Arginine may, indeed, explain the thermogenic effect of nuts, but it also might be the flavonoid phytonutrients, which I explore next in Fat Burning via Flavonoids. Should one avoid soy protein isolate, even though it’s such a concentrated source of arginine? Stay tuned—I’m going to address that when I cover IGF-1 and the cancer growth reversal studies. I offer a sneak peek in my full-length 2012 presentation, Uprooting the Leading Causes of Death.