alt Hacker News40% of lost calories globally are from beef, needing 33 cal of feed per 1 cal
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> If excess beef consumption were reduced to healthy quantities, as defined by the EAT-Lancet healthy reference diet, and substituted with chicken in forty-eight higher-income countries, the lost calories avoided would be enough to meet the caloric needs of 850 million people.
It's really impressive how efficient chickens are compared to beef. Obviously thinks like legumes are way more efficient, but we've really bred chickens to be meat machines in a way we haven't with cows.
> To feed a growing population, it is essential that the global agri-food system be managed to efficiently convert crop production into calories for human consumption.
It's really not. Efficiency is the enemy of redundancy. Countries want food security, so they must therefore produce excess calories.
Cows eat grass. Humans use more calories digesting grass than they gain from eating grass, so cows are infinitely more efficient than humans at gaining calories from grass.
And there are places in the world where growing human food would destroy the land. Semi-deserts like Texas and Montana. Grazing cattle there is a good idea. Bison would be even better because the native prairie there is adapted to bison, but cattle are a close substitute.
But we eat a lot more cattle than Texas & Montana can support.
And is not even taking water consumption into account.
Or the annoying cowbells :)
There are people who for various ideological reasons hate beef.
If the market demands more chicken over beef, producers are perfectly capable of making a switch.
Cows are able to make delicious beef from grass and thistles; that they are often fed other things is not a proof that eating cows is bad.
"lost calories" as if having people consume animal feed to reduce total caloric loss is a good idea.
I think we need more ruminant animals raised on grass as a means of regenerative farming... I think beef largely gets a bad rap for a lot of reasons that largely don't hold to grass fed cattle farming.
Actual title: Only half of the calories produced on croplands are available as food for human consumption
Surprised how many people in the replies actually think their beef is grass fed.
Exchanging e.g. grains for beef is not 'lost' anything, even if theoretically the former gives more calories. Nutritionally beef is just more valuable. Calories isn't the only thing we need apparently.
Aha. All the grass humans could eat instead of the cows. Not all land is great for growing crops at. Other land is just good for growing grass for cattle to graze on.
Conversion efficiency is slippery slope to vegetarianism.
The really good thing about this is that if we somehow do manage to "ruin earth" and lose a significant portion of agricultural production, we will just have less tasty food rather than starving to death.
Food waste is another kind of "slack" in the food supply chain that would help. Imagine how the world would look if food supply was as optimized as e.g. microchips and then we got any kind of disruption... except now you starve rather than not being able to upgrade your car.
Beef gets a lot of bad rep in environment terms because developed countries grain fed it in intensive settings. But not all cattle in the world is raised like that.
Are the calories used by biofuels and cattle even directly consumable by humans?
> we need the calories to feed a growing population
> population doubles
> we need the calories to feed a growing population
Stop filtering your nutrition through animals. It’s inefficient.
isn't the obvious answer not to eat less beef but rather not produce beef super fast with grain feed. if the beef we ate came from grass lands + hay in the the winter it would cost more, but would dramatically reduce the crop consumption...
Another factor that these studies seem to miss from the beef question is the fact there is more pasture land than viable agriculture land. Beef are often grazing on marginal land that would not be fit for much else. Clearcutting the amazon to meet beef demand is one thing but that isn't the case for I'd guess most places they have been farming beef for the past 100 years.
Hmm, I wonder if beef is more expensive than chicken to reflect the inefficiency in its production? Oh it is. So it must then be that people just prefer the flavor and taste of it as compared to cheaper meats then.
But the beef delivers way more nutrition and calories than the crop they eat.
Also them: more adults globally eat too many calories
Ok but don't cattle often browse on land that is too marginal for farming? And don't they eat grass? I don't know if this argument holds up.
false comparison, as most calories cattle consume are from things people dont eat, even if there are simmilar variets of plants that both people and animals eat, they are not interchangable. Animals also eat huge quantities of human food, that has been rejected through some technical consideration, just size, as many crops produce many fruits or vegetables that are iether too large or small to be processed, or are misshapen or damaged, cow dont care nom nom nom, gone by the ton, and the trucks are still comming. The true unforgivable waste is by people over eating, wasting, throwing away, and destroying good foog for countless beurocratic reasons.
Small anecdote
Since about 2019 I have been anemic. My iron levels were just a hair above being low enough to require an immediate infusion, and my doctor kept pushing me to eat more iron. She would often ask if I was a vegetarian or vegan, presumably she was assuming I was bad at it. I would always tell her the same thing. "I don't eat much beef but I do eat it"
Last summer I was diagnosed with celiac. Suddenly it all makes sense. I'm low on iron because my gut cannot absorb it.
So I start eating gluten free, and I start eating way more red meat than I used to, because building your iron levels takes a lot more iron intake than maintaining it. Now, about 8-9 months later I'm finally starting to feel better and my blood tests are showing my iron slowly creeping out of the danger zone
My nutritionist tells me that recovering this quickly would have probably been just about impossible for a vegetarian or vegan, without having an iron infusion done.
Anyways. Beef is kind of an important thing in our diets, that's all. Now that I'm back to a more normal level I'll go back to eating less of it, but I am now very conscious how important red meat is in a rounded diet
Edit: I guess my point is that calories are only part of the picture when it comes to food and there are a lot of other concerns as well, which are arguably more important to being healthy. You get calories from basically anything food you eat (assuming it's not some kind of engineered zero calorie diet food) but other minerals and vitamins are harder to source.
This is already covered in the Soylent Green protocol isn't it?
An alternate take: if calorie efficiency is so important we should focus on consumption more than production.
Don't care, I refuse to eat bugs and slop.
I don't eat grass.
I recommend the book The Proof is in the Plants for a seemingly unbiased review of the literature.
Dude cites study after study pretty much all with the same conclusion: Eating animal products is bad for your health.
Taylor swift is using her private jet to take out the trash to the curb, but hey, the "normal people" should eat less meat.
don't care, not gonna eat bugs.
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it seems disingenuous to problematize beef. it turns grass into human energy and also requires civilizational practices that create and preserve human dignity and animal welfare. mainly, the so called problem serves to centralize the problematizer themselves. their arguments from a position of centrally planning and managing food economies are intellectual tarpits. however, that our food supply and rural ways of life have the attention of the perpetually concerned is worthy of note. when they start with their opinions, mind your wallets and assets. in short, avoid.
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Wait til they evaluate calories to produce ensembles of separable blends of protein and fats and more...beef is pretty efficient
We have more than enough calories globally, although Africa has more starvation now than it did a decade ago.
What we need is nutrient density. 0% of those feed calories have, eg, creatine. 100% of the beef calories do.
> "needing 33 cal of feed per 1 cal"
The calories cows eat are ... useless to humans. We cannot digest cullulose (grass) and most of the rest of the things we feed to cows. Anyone throwing this number around has an agenda, and is not objective
This is the metabolic version of inflation: subsidized, hollow calories used to mask a decline in actual nutritional value. Fiat Food
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Not trying to be overly flippant... who cares?
The paper opens with "to feed a growing population" without asking is that what we need? want? where we are actually heading to?
Is feeding the world a real problem? I've yet to see compelling evidence that it really is except as a secondary effect of logistics, energy supply, and war.
edit: I understand the environmental impacts. I think we should solve our energy problems first.