After listening to nearly all of the TR podcasts (I’m sure there are a few that fell through the cracks), the recommendation to eat highly refined carbohydrates in large amounts, both on and off the bike, is ubiquitous. To my knowledge, there hasn’t been a deep dive into the long-term health effects of such a diet to include things like: increased risk for non-alcoholic fatty liver disease, negative cardiovascular effects, effects on cognition and memory, etc.
If there is a lack of research/evidence in this area (highly active individuals with high % of total kCals coming from refined sugars), maybe this can be stated? TR does a fairly good job of presenting a balanced and thoughtful discussion of training-related topics, including nutrition, but this particular topic has been awfully one-sided.
In essence, eating refined sugars (gels, bars, mixes, etc) might have very real and nearer-term health consequences than people think. If this particular diet is going to be so strenuously promoted, it seems responsible to also present the very significant downsides as well.