What’s Worse-Carbs or Seed Oils? Understanding a High-PUFA Diet

I have been reading some of Tucker Goodrich’s analysis of the role of seed oils in modern diseases and I believe that he presents a compelling case. I provide a link to his title article on this subject below.

My simple takeaway from reading many of the papers is that (a) excess carbs is bad, (b) excess Linoleic Acid (from seed oils) is bad, but (c) together they are much worse and probably toxic, particularly when a person loses blood glucose regulation.

Tucker Goodrich: http://yelling-stop.blogspot.com/2018/06/whats-worsecarbs-or-seed-oils.html

Tucker has also written an older article “Omega-6 fatty acids: the alternative hypothesis for diseases of civilization” that ties a lot of evidence together in an easier to consume format and with less jargon. It is well worth reading.


We have good evidence that consumption of excessive carbohydrates leads to insulin resistance, hyperinsulinemia, T2D and related diseases.

We have Robert Lustig showing that the carbohydrate, sugar, by itself is bad.

We have Tucker and others showing how seed oils are particularly bad for our health.

If you add those two/three ingredients together, you get modern processed food.

While neither a high carb diet nor seed oil consumption is good, they seem to work particularly well together to accelerate your decline into early death.

You don’t need me to tell you what to do.

Fructose and the Liver

Some recent science helps us better understand why consuming a lot of sugar (50:50 fructose+glucose) is not good for us.

While glucose is able to be absorbed directly by nearly all body tissue, fructose needs to be first converted and the highlighted study shows that fructose is processed by the small-intestines and converted into glucose.  However, the small-intestines are adapted to only receive small doses of fructose and any excess is shunted to the liver where it is largely converted to fat.

While further experiments need to be conducted, it appears that the human small-intestine may max out with less than 5 grams of fructose.

In mice, fructose gets processed in the small intestine before getting to the liver.


Sugar industry withheld evidence of sucrose’s health effects nearly 50 years ago

A U.S. sugar industry trade group appears to have pulled the plug on a study that was producing animal evidence linking sucrose to disease nearly 50 years ago, researchers argue in a paper publishing on November 21 in the open access journal PLOS Biology.