Hyper Palatable Food

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Eddy Edson

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Relationship to Diabetes
Type 2
Chris MacAskil has a new vid which I found interesting mainly for its focus on the work of Tera Fazzino, a young nutrition researcher who has become a collaborator with Kevin Hall on some important food studies.


Fazzino's main thing has been developing a precise, quatitive definition for "hyper palatable food" (HPF). See https://onlinelibrary.wiley.com/doi/abs/10.1002/oby.22639

The focus is not on individual nutrients but combinations. It overlaps with but is not the same as the "ultra processed food" concept. A food can be UPF without being HPF, and HPF is possibly a better policy target. UPF is here to stay - cheap, convenient, shelf-safe, tasty - but realistically you can actually do something about HPF. And palatability appears to be an actual obesity driver; not necessarily the case for UPF.

In summary, using "data driven methods" she divides HPF into three threshhold categories: Fat plus sodium; fat plus sugars; carbs plus sodium.

1679875824594.png
See the paper for a discussion of validation.

With this definition, a huge 69% of foods in the standard US database are now HPF's. By standard food categories:

1679876240871.png

Another paper looked at how this has evolved over time. https://pubmed.ncbi.nlm.nih.gov/35581172

Results: The prevalence of HPF increased 20% from 1988 to 2018 (from 49% to
69 %; P < 0·0001). Themost prominent differencewas in the availability of HPF high
in fat and Na, which evidenced a 17% higher prevalence in 2018 compared with
1988 (P < 0·0001). Compared with 1988, the same food items were >2 times more
likely to be hyper-palatable in 2001, and the same food items were >4 times more
likely to be classified as hyper-palatable in 2018 compared with 1988 (P values
< 0·0001).

Conclusions: The availability of HPF in the US food system increased substantially
over 30 years. Existing food products in the food system may have been reformulated
over time to enhance their palatability.


Most of the huge increase from 1988-2018 (from 49% to 69% of food supply) has been in the FSOD (fat + sodium) category. Fat+sugars and carbs+sodium didn't change much:

1679876574446.png

Underlying the change:

[Fat + sodium HPF foods] commonly consists of meal-based items and savory
foods(14,18) and the findings may reflect the increase of frozen
foods and quick preparation items that were introduced
to the food system in the 1980s(6,31). Relatedly, our
analyses indicated that foods from the USDA-defined categories
of fats, meats and dairy, foods that are commonly
frozen or quick-preparation foods, yielded escalating
increases in their likelihood of being hyper-palatable over
the 30-year period
.

Fazzino believes that the increase likely reflects a deliberate program by food companies to increase palatability. On the other hand, it suggests a plausible policy strategy.

The current US food supply is highly saturated with HPF, which our findings
indicate comprised almost 70 % of available foods as of
2018. The growing availability of HPF over time, particularly
HPF high in fat and Na, may have resulted from the
reformulation of existing food products in the food system
to be hyper-palatable. Thus, expanding HPF availability
may be one key contributor to the obesogenic food environment
in the US. Given potential consequences for population
health, policy-level action is needed to address the
presence of HPF in the food system. Policy may focus on
limiting the nutrient thresholds allowed in foods to be
below HPF thresholds (e.g. foods should contain <25 %
kcal from fat and <0·30 % g from Na). The approach would
be beneficial and highly feasible as it could largely decrease
the availability of HFP in the food system and would not
require the removal ofHPF items from the food system altogether
(which would be infeasible). Given that reformulation
of food products to enhance their palatability may be a
key strategy employed by US food companies, policy
action targeting nutrient combinations in individual foods
may be the most necessary and direct approach to regulating
the presence of foods in the food environment that may
be difficult to stop eating.
 
One of the highlights of this research is the way that the industry has reformulated foods over the last 30 years so that what looks like basically the same product has become more & more palatable - insinuating HPF's into out lives by stealth.

Even the humble Ryvita is guilty. At least here in Oz, the old "classic" Ryvita is a very non-HPF item: fat approx 3% of kcal and sodium 0.1% of weight - way under FSOD HPF threshholds of 25%+ / 0.3%+.

I'm a weirdo so I eat these just by themselves - yum! - but even if you're a normo who adds stuff to them, you're probably at pretty low risk for crossing the HPF threshhold.

Compare this to the newer "multigrain" Rvita: 17% / 0.1%. Put some cheese on it and maybe you could easily cross the threshhold. What drove the new product: increased palatability veiled by the "multigrain" healthy-food branding?

And then the more recent "thins" product. Eg "cheddar & cracked black pepper" thins at 21% / 0.8%. Combine this was just about anything with some fat in it and you're well into HPF territory. A real wolf-in-Ryvita-clothing ...
 
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Really interesting @Eddy Edson

I think hyper-palatable is what I always thought UPF was reaching for - but the definition of UPF was ultimately pretty problematic and lots of basic ingredients to 'cooked from scratch' meals were unfairly(?) classified alongside Food Industry Frankenfoods
 
Really interesting @Eddy Edson

I think hyper-palatable is what I always thought UPF was reaching for - but the definition of UPF was ultimately pretty problematic and lots of basic ingredients to 'cooked from scratch' meals were unfairly(?) classified alongside Food Industry Frankenfoods
I think it actually goes more the other way. Bake a cake at home with however much butter and sugar in it, and it won't count as UPF according to NOVA. But eg tofu usually will count as UPF.

NOVA can demonise essentially harmless processing steps and give a pass to dubious steps, just because they don't happen in a factory. It's not very coherent, IMO.

On the other hand, a factory-processed food item doesn;t have to be HPF by Fazzino's definition, while something home-cooked from pretty basic ingredients might be (watch the cheese!).
 
Fazzino in collaboration with Kevin Hall led a secondary analysis of two recent Hall studies, applying her HPF definition:


We estimated how energy density (ED), hyper-palatable foods (HPFs), protein (Prot) & eating rate (ERate) affected energy intake of 2733 meals from four dietary patterns: minimally processed low-carb & low-fat as well as mixed macronutrient ultra-processed & unprocessed diets.

Across all four dietary patterns, we found that ED, HPF, & ERate were consistently positively related to ad libitum meal energy intake using linear mixed effects models.

We found that ED and HPFs had the strongest effects on ad lib meal energy intake, but their interaction was negative meaning that the effect of HPFs was higher for meals with lower ED and vice versa.

Surprisingly, protein content of meals was *positively* related to ad lib meal energy intake (we expected the opposite) during ultra-processed and unprocessed diets but did not significantly affect energy intake of minimally processed low-fat or low-carbohydrate meals.

Finally, we performed mediation analyses and found that both energy density and hyper-palatable foods mediated a substantial fraction of the differences in meal energy intake between low-fat vs low-carb diets as well as between unprocessed vs ultra-processed diets.

In summary, our secondary analyses suggest new prospective randomized studies to test the causal effects of energy density, hyper-palatable foods, eating rate, and protein content on ad libitum energy intake and how these effects play out over time.



As a result, Hall is running another crossover RCT aimed at teasing out the differential effects of energy density and HPF within the context of ultraprocessed and minimally processed diets. Expected Jan 2024 end date.


The diets being examined by this trial:
  • Ultra-processed diet that is high in non-beverage energy density and low in hyperpalatable foods
  • Ultra-processed diet that is low in both non-beverage energy density and hyperpalatable foods
  • Ultra-processed diet that is high in both non-beverage energy density and hyperpalatable foods
  • Unprocessed diet that is low in both non-beverage energy density and hyperpalatable foods
With primary outcomes energy burn and kcal consumption per day, and secondary outcomes meal eating rate and subjective palatability assessment.

The study should provide some insight into the extent to which ultraprocessed status, formal hyper-palatability and eneergy density are independent or related factors for energy (over-)consumption and how this relates to eating rate and subjective palatability assesment.

Will provide evidence for eg whether ultraprocessed status matters for overconsumption when ED and/or HPF status are accounted for.

Anyway, really interesting current research, IMO.
 
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