More than a billion asians eat nutritious, cheap and calorie-balanced meals every day, unprocessed.
Staples like legumes and rice don't cost much and are very nutritious. And supplementing with moderate amounts of seasonal fruits and vegetables and moderate animal protein is still very affordable and healthy.
A kilo of (dry) legumes is about $3.50, about 3500 calories (50% more than an average human needs per day), delivers >200 grams of protein, > 100 grams of fiber, some healthy fats and enough carbs to power you and a good set of vitamins.
Hell if you get down to it, vitamin pills to supplement any deficiencies is a budgetary rounding error.
Compare that to either Doritos and you don't get anywhere close. Doritos cost >$10 per kilo, and cost >$100 per kilo of protein, has low fiber, high fat, high salt. It's not nutritious, actively harmful and actually extremely expensive to fuel the body this way.
And it makes sense: processing ingredients leads to a more expensive product than the base ingredients. This is true in every economic sector. Only uniquely, in the food sector ultra-processing doesn't only lead to higher prices for the customer (the reason companies do it in the first place) but also less healthy outcomes.
Doritos are made of corn and vegetable oil. The prices of these ingredients are orders of magnitude lower than the end-product. Corn is like 30 cents per kilo, oil about $1.50. If you want the same nutrients without processing like frying etc, you can eat literal orders of magnitude cheaper.
This is one of those reasons that the term 'processed' food is stupid. White rice is a very processed food - what is the removal of the bran and germ but processing? And many other 'processed' foods undergo processing with the same sort of ramifications for health.
Legumes are also not complete proteins in the majority of cases - soy is a significant exception here. Soy has a PDCAAS of 1, the same as whey, but lentils range from .5 to .7, many beans are around .6, etc., and this can end up meaning your 200g of protein ends up being quite different in impact to many of your body's uses for protein than someone else's 200g of protein.
If you are seriously comparing the attractiveness of “legumes” (what legume and recipe is that?) with the attractiveness of Doritos I don’t know what to tell you.
If you cook something that is nearly as attractive as ultra processed foods, the price skyrockets.
> Processed foods are much cheaper per calorie than "healthy" options.
Attractive is a separate topic. Regardless of budget, for many people a chocolate cake will always be the most attractive food, regardless of cost. Doesn't mean we should have people living on chocolate cake diets.
So a chunk of your protein intake would still be incomplete. It's not like the ratios are perfect so that a cup of each gets you 20g of PDCAAS 1.0 protein. Doing some quick napkin math looking at the AA makeup and protein digestibility of the two, it's like 14g equivalent of PDCAAS 1.0 protein.
~25% is a pretty significant gap if you're trying to hit optimal levels for things like muscle growth, etc.
Please actually go to east asia, go into their markets, and look on their shelves. They have SO much processed crap. Most Asians will gleefully tell you their love of the worst possible instant noodle (i.e. Mama brand) along with American cheese or other slop on top. Asians have the highest food standards when they want to, but their lows are as low as ours are. They love love LOVE spam for gosh sakes!
Also white rice has terrible macros and is why they have crazy rates of Diabetes despite low obesity rates.
And anecdotally, when I am eating healthier I am opting for a larger range of ingredients. Probably to keep my mouth interested as I am not getting the food that's been engineered to be perfect to my palate. While potatoes and beans are in my diet, I am also opting for a lot of vegetables that are more expensive, paying more for fresh herbs and interesting spices. I am almost always buying canned beans, sauces, and other foods with some processing to speed up prep time.
I think your analysis suffers from comparing processed food engineered to taste great to the blandest, driest raw ingredients. Factoring in the time and secondary ingredients to make those raw ingredients taste great adds a lot of cost. Add in the cost of more varied ingredients bc very few people want to eat beans, potatoes, rice, and bland chicken every day. And further, you're missing the savings processed foods add by being shelf stable. They can sit on a shelf or in a freezer for months or years vs. fresh produce with a much shorter lifespan.
So yes you can eat very cheap and very healthy, the vast majority of people will loathe that life over time. You can eat kind of cheap, very healthy, with a limited number of ingredients and have things taste great if you have a LOT of time to devote to cooking, this will still not satisfy many.
Red kidney beans (50g): PDCAAS = 0.88, Protein = 11.25g Basmati rice (50g): PDCAAS = 0.7, Protein = 4.5g
Red beans + rice (50g, 50g): PDCAAS = 1.0, Protein = 15.75g
Milk (500g..): PDCAAS = 1.0, Protein = 15.5g
So, from a protein perspective (according to PDCAAS), 500g of milk will give you the same amount of usable protein as the 100g rice and beans meal. There is nothing left on the table.
So, just eating kidney beans, PDCAAS would say that you aren't really getting the full benefit of the "protein on the label". But once you combine it with rice, you are getting the full benefit (according to PDCAAS).
You can't look at the digestibility of the two foods in isolation to make the calculations.
As long as you are eating a varied diet, PDCAAS is pretty pointless. If you have an eating disorder, or food scarcity issues, then it might become important.
OP said processed foods are cheaper per calorie than healthy, i.e. eating healthy is more expensive and more difficult.
Nothing at all was said about 'processed foods are more tasty, thus eating healthy is more difficulty', so I didn't reply to it.
Then OP provided Doritos as an example. And I countered by showing that the worlds staple foods eaten by billions, non-processed, are much cheaper than eating processed foods like Doritos example OP gave. That's all.
Now as for your point on taste: try eating a nice daal at your local Indian restaurant and tell me you'd rather eat bags of doritos every day for breakfast, lunch or dinner. If you prefer Doritos then I don't know what to tell YOU.
I don't.
> Please actually go to east asia
I'm posting from east-Asia.
I know Asians also eat crap. That's why I said 1 billion, not 5 billion Asians eat nutritious staple foods.
> Also white rice
I didn't mention white rice. -- Not a great staple, but even if I had to play devil's advocate for rice, it's easy competition against doritos.
I just made a simple comparison between two food types, on the one had the example OP gave (doritos), and on the other hand the most common staple foods eaten in the world, like grains and legumes.
Again if I have to repeat that, the most common staple foods in the world.
That I hope does enough to dissuade you from making the argument that eating these ingredients is a ridiculous endeavor. It's actually what the majority of healthy humans eat on this planet for centuries, the standard, the norm.
It's for anyone obese to figure out why they don't apply this norm.
Take legumes for example, cooked as a Daal it is eaten by more than a billion people all the time. 20 to 30 different types of pulses are cooked, and hundreds of recipies exist. If you walk into your local Indian restaurant, you'll experience a wide range of intense flavors. To say these are the blandest ingredients is incorrect, virtually everyone would prefer to eat such food daily compared to doritos for breakfast, lunch and dinner.
The idea that ultra-processed foods are a staple in my diet, is insanity. I'd be disgusted. I love ultra-processed foods as an occasional snack, not as a diet. My diet is healthy, affordable and tasty. Google and youtube are full of examples of affordable, tasty meals.
Minimal processing is completely fine by the way. There's little wrong with a good canned bean for example, great shelf life, minimal salt, maximal convenience, good nutrition, good price. Thrown into a salad with a simple dressing of olive oil and lemon juice, with some cut vegetables, gives a complete meal. Not more expensive than doritos, healthy, full of vitamins, calories, low glycemic index, protein, and 'cooking' is a matter of throwing the ingredients in a bowl and mixing, childs' play.
Same with the daals I mentioned, mostly a matter of throwing ingredients into a pot. Cooks itself with no supervision in less than half an hour while you're on your phone. Stores 5 days in the fridge or months in the freezer. Can be a great breakfast or dinner multiple times a week.
There's just tons of these options that are delicious and easy, cheap and quick, enjoyed by billions. Obese people just need better education and mentorship in my opinion. I could never be fat because my parents and environment showed me normal food culture, without it I'd probably be fat. I truly believe in the power of mentorship here, which isn't properly institutionalised or commercialised, which is why so many people lack it.