It is also very easy to eat a large number of calories via carbohydrate. Essentially, carbs make you fat.
I can personally observe in myself that if I eat a chocolate bar in the morning, I will be more hungry in an hour or two than if I had eaten nothing at all.
Unrefined carbs like in potatoes and (whole)wheat and oatmeal etc. are not bad; those foods provide many good nutrients and do not cause the negative carb effects you mentioned.
It's the same as fruits containing sugar (which is a carbohydrate actually I think) but not causing the same ill effects as eating the same amount of sugar from Sour Patch Kids (candy which is ~80% sugar by weight).
That's the thing that everyone in this discussion seems to be missing: taste. There are good reasons to believe that better-tasting food may have physiological effects beyond just being pleasurable to eat [1]. This is not controversial when it comes to other substances but with food it's a much tougher battle.
[1] https://slatestarcodex.com/2017/04/25/book-review-the-hungry...
The problems start when you refine all the fiber away and load them up with oil.
Fasting is a powerful thing! So is refined sugar.
I only eat once a day M-F, fwiw.
No carbs works really well for me and makes me loose weight.
When I don't eat carbs I feel the best, has the most energy and loose weight.
It's pretty significant.
Pretty much any of the myriad resources on paleo / low-carb / grain-free diets will cover most of the reasons and point to research backing up why whole grains are not healthy. Nutrition science is a weirdly controversial topic however so for every study that points in one direction you'll find someone passionately committed to a different theory who will dig up conflicting evidence.
Having read a lot on the subject over the years (and through personal experience) I'm persuaded by the evidence in favour of a low-carb, largely grain-free, high fat paleo style diet but I've largely given up trying to convince anyone who feels differently on the Internet as for whatever reason nutrition debates are as heated and futile as political ones.
1. Lectins. Lectins are substances found in many raw foods, like tomatoes, lentils, beans, and whole grains. Some lectins are toxic (like those in kidney beans) and some are completely harmless (like those in tomatoes). Toxic lectins are completely destroyed by proper cooking. Some high lectin foods (like lentils and beans) are strongly correlated with longer lifespans, so diets suggesting they be avoided are probably worth scrutiny.
2. Phytates. Phytates can bind to vitamins and minerals and make them biologically unavailable in digestion. In practice, this is only problematic in already nutrient deficient diets. And like most dietary concerns, the picture is more complex. Phytates also have remarkable positive effects, such as decreased rates of cancer, kidney stones, diabetes, and heart disease.
The paleo diet (basically rebranded Atkins) runs contrary to every developed nation’s dietary guides. To believe it’s healthy is to believe in conspiratorial thinking as silly as flat earth or faked moon landings.
Some of you people sound like you should just become Breatharians instead of burdening the rest of us with your tiresome dietary restrictions. For those of us that can eat real food without it ruining our lives, you're like so many annoying flies always pushing your strange food fads when the rest of us just want a reliable source of clean meat and bread.
Who do you thing would go for the beyond wheat products?