re: What's so hard about consuming less than 2000cal/day?

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That is true. However too many people say just exercise. Well if your fat arse can barely do anything,

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At this point, just walking is exercising. You progress from walking to actual exercising.

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I drink an extra day’s worth of calories every week in beer.

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beer is the only answer.

Maybe we just need to add another day to the week and it will be alright

So what is your solution, government mandated diet choices?

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. This isn’t nazi germany, we are all free to live the life we choose

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No one is enforcing any mandates, just as no one cares that you have saved. You do have the freedom to make poor choices. You don’t have to believe in it because you can make it your own reality. Take your Nazi germany rhetoric to the poli board and of course we all have the freedom to live the life we choose you doofus.

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Its not about consuming less than 2000 calories a day.

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2000 calories is just a near random baseline for men. It is probably only accurate for a small percentage of men. It also assumes 100% uptake and everyone's body is different. An easily identifiable lack of uptake is when you eat a lot of nuts, unless you turn the cashews into cashew butter you are going to crap out a lot of chunks which all contain calories that did not make it into your body.

The reality is to lose weight you have to be at a caloric deficit. How you get there is going to be different for different people. You can eat less or burn more. The break even point is going to vary from individual to individual and from day to day for each of them unless they have a remarkably stable energy usage. As Bigpappi pointed out the body is very efficient and can manipulate its energy usage. As best I can tell my BMR is around 2100 calories and I burn on average 1,800 calories per day in exercise. When I eat 3800-3900 calories a day my weight stays stable. If I drop below I lose weight but not quite at the level one would expect (maybe 85%) presumably my body is either uptaking more calories from the food or using them in a more efficient manner. So yes there is nothing magical about 2,000 calories for a man. It is also very unlikely that a man that only eats 2,000 calories a day ever gets 100 pounds overweight. Numbers vary but the getting your body to burn more calories than it uptakes is the only road to weight lose how one gets there is for them to choose and execute.

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1,800 calories per day in exercise.

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You running a half marathon every day?

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2000 calories is just a near random baseline for men. It is probably only accurate for a small percentage of men.

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It’s also a very OLD “standard” that I can remember hearing as a VERY young child parked in the floor in front of a console tv playing with inanimate toys, and I turned 60 this summer.

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The reality is to lose weight you have to be at a caloric deficit. How you get there is going to be different for different people.

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Apparently the “form”, the source, matters also which is not surprising considering evolution evident in other species to adapt to food sources has lead to a change in biological processes within a genus, some might argue leading to a variation of species. We know different diets can lead to variations of at least intensity of coloration and patterns.

The world majority population did not evolve on a corn based diet. The internal processes of mankind including but not limited to caloric intake are relatively new for corn. Rice, wheats, potatoes were our primary carbs and we didn’t use much if any other “seed” oils rather animal fat in various forms and sources. Evolutionary wise it’s a much more recent trend to also not be suffering from a deficiency of some kind too which affects our metabolic responses.