Jebus wrote:
I understand your reasoning. However walnuts still have too much Omega 6. No matter how many of them I eat and how much off my ratio is it will never get me to the recommended 4:1 (unless my balance is lower than 4:1) and if my balance happens to be a perfect 4.0 at the time I eat the walnuts I am moving away from the perfect balance.
4:1 is just a guess. There's not any strong evidence to suggest that's a perfect balance. 5:1 is still pretty good. As long as you do better than 10:1, you're doing better than most meat eaters. The problem was that vegans were getting a 15:1 ratio, which was not good and was increasing our cardiovascular risk and neutralizing some of the benefits of not eating cholesterol and eating less saturated fat.
The recommendations for vegans getting a higher ratio of Omega 3 aren't old enough yet to really analyze the fruits of those changes in terms of mortality. We'll probably start getting information in in the next decade or so.
We have studies on meat eaters, but they eat so much saturated fat and cholesterol that it's really hard to equate those results to vegans. They also get more DHA from their diets, so conversion is less important (and may be less efficient than in vegans).
I recommend Walnuts because of:
1. Availability, some people find chia, hemp, and flax hard to find
2. Low rancidity, they don't go bad as fast, and it's obvious when they're bad. With smaller seeds the spoiled ones are all mixed in and you can't pick them out. Chia Flax and Hemp probably all need to be refrigerated if stored for long, but this can also result in humidity issues and mold.
3. Good culinary usefulness. Flax and Chia aren't very good for making nut cheeses, they get too gummy. Hulled hemp is good for nut cheese, but may be significantly more expensive, in addition to the issues above.
Averaging a slightly higher ratio (maybe 5:1) isn't a big con when compared to all of those advantages that Walnuts offer.
I also recommend canola oil (rapeseed oil) for similar reasons of availability and culinary utility. It has a better ratio, at around 2:1.
I keep it refrigerated, though, and avoid cooking at high heat with it.
Of course, it is an oil, and is missing many of the other healthy properties of nuts and seeds.