Eating Carbs Helped Humans Develop Big Brains https://www.popsci.com/adding-carbs-diet-helped-humans-develop-big-brains/
Humans are physically different from other apes in some important ways—including the fact that humans have much bigger brains, which use about a quarter of the calories we consume. But figuring out the diet that facilitated our big, energetically expensive brains hasn’t been easy. Using the findings of several recent studies in this field, an international team of researchers has put forth a theory: By adding starchy foods to their diets, early humans gave themselves the energy boost needed to support larger brains. The study is published in the Quarterly Review of Biology. In human saliva, the enzyme amylase helps to break down starches. Compared to our primate relatives, who mostly munch on high-fiber, low-carb plant materials, humans have many more copies of the amylase gene, which would have enabled us to better break down carbohydrates and benefit from the extra energy. To the authors of this study, it makes sense that this adaptation would have spread over time, enabling humans to grow larger brains, which happened about 800,000 years ago. Plus, when we started cooking our food, starchy vegetables became much easier for the body to break down and extract calories from. Now our brains use about a quarter of the calories we consume—something that wouldn’t have been possible without carbs, the study authors write. To others in the field, this idea makes sense, though the timing isn’t fine-tuned enough to be totally convincing, as one researcher told the New York Times. Proponents of the carb-free paleo diet may need to add back some starch, after all.
Eating Carbs Helped Humans Develop Big Brains https://www.popsci.com/adding-carbs-diet-helped-humans-develop-big-brains/
Humans are physically different from other apes in some important ways—including the fact that humans have much bigger brains, which use about a quarter of the calories we consume. But figuring out the diet that facilitated our big, energetically expensive brains hasn’t been easy. Using the findings of several recent studies in this field, an international team of researchers has put forth a theory: By adding starchy foods to their diets, early humans gave themselves the energy boost needed to support larger brains. The study is published in the Quarterly Review of Biology. In human saliva, the enzyme amylase helps to break down starches. Compared to our primate relatives, who mostly munch on high-fiber, low-carb plant materials, humans have many more copies of the amylase gene, which would have enabled us to better break down carbohydrates and benefit from the extra energy. To the authors of this study, it makes sense that this adaptation would have spread over time, enabling humans to grow larger brains, which happened about 800,000 years ago. Plus, when we started cooking our food, starchy vegetables became much easier for the body to break down and extract calories from. Now our brains use about a quarter of the calories we consume—something that wouldn’t have been possible without carbs, the study authors write. To others in the field, this idea makes sense, though the timing isn’t fine-tuned enough to be totally convincing, as one researcher told the New York Times. Proponents of the carb-free paleo diet may need to add back some starch, after all. hkpolyu 发表于 2021-05-23 17:18
文章的意思就是说，如果你的祖先也选择了低碳水饮食，你现在可能就是只猩猩🦍 Compared to our primate relatives, who mostly munch on high-fiber, low-carb plant materials, humans have many more copies of the amylase gene, which would have enabled us to better break down carbohydrates and benefit from the extra energy.
文章的意思就是说，如果你的祖先也选择了低碳水饮食，你现在可能就是只猩猩🦍 Compared to our primate relatives, who mostly munch on high-fiber, low-carb plant materials, humans have many more copies of the amylase gene, which would have enabled us to better break down carbohydrates and benefit from the extra energy. Beau 发表于 2021-05-23 18:42
https://www.popsci.com/adding-carbs-diet-helped-humans-develop-big-brains/
Humans are physically different from other apes in some important ways—including the fact that humans have much bigger brains, which use about a quarter of the calories we consume. But figuring out the diet that facilitated our big, energetically expensive brains hasn’t been easy. Using the findings of several recent studies in this field, an international team of researchers has put forth a theory: By adding starchy foods to their diets, early humans gave themselves the energy boost needed to support larger brains. The study is published in the Quarterly Review of Biology.
In human saliva, the enzyme amylase helps to break down starches. Compared to our primate relatives, who mostly munch on high-fiber, low-carb plant materials, humans have many more copies of the amylase gene, which would have enabled us to better break down carbohydrates and benefit from the extra energy. To the authors of this study, it makes sense that this adaptation would have spread over time, enabling humans to grow larger brains, which happened about 800,000 years ago. Plus, when we started cooking our food, starchy vegetables became much easier for the body to break down and extract calories from.
Now our brains use about a quarter of the calories we consume—something that wouldn’t have been possible without carbs, the study authors write.
To others in the field, this idea makes sense, though the timing isn’t fine-tuned enough to be totally convincing, as one researcher told the New York Times. Proponents of the carb-free paleo diet may need to add back some starch, after all.
2015的文章。
Cheese以蛋白质和脂肪为主
他们吃菜和肉么，你这是碳水有点过量了。。。脑子用不完变成肉。。
没菜，肉有几粒bacon bit。平常都是我们给做，现在自己根据自己爱好就做成这样。我是想不通，全是碳水怎么吃的下去。大家说说，换成中餐，酱油光面配白馒头，你吃的下去吗？
人体供能本质上还是靠糖，即便零碳水，也是把脂肪蛋白质转换成糖来供能的
我认识的不吃碳水、过午不食的人瘦是瘦，脸完全不能看，瘪成坑。
文章的意思就是说，如果你的祖先也选择了低碳水饮食，你现在可能就是只猩猩🦍 Compared to our primate relatives, who mostly munch on high-fiber, low-carb plant materials, humans have many more copies of the amylase gene, which would have enabled us to better break down carbohydrates and benefit from the extra energy.
是啊 基本常识
但是很显然这种转化效率会比碳水/糖类食物来的慢 直接体会就是需要大量脑力（对于我就是集中编程）的时候会觉得脑子转不动 这个时候就需要巧克力或者咖啡糖：）
不严谨地说一下，会不会是人类在生长发育，尤其是大脑发育时更需要脂肪和碳水。今年种菜玩才知道，蔬菜营养生长和生殖生长时需要的肥料比例区别很大的，通俗来说就是结果期间如果施用适用于开花期的肥料对产量影响很大
所以需要的碳水也更多。
可能每个人的转化效率不一样？ 我个人的体会是如果需要集中精力用脑，饭前有一点点饥饿时效果最好最容易集中注意力，摄入甜食/碳水后会很困大脑变钝，这个时候喝咖啡有一定的帮助
我们二医强调小娃一定要多吃碳水化合物，否则脑子发育不好。
是的，不吃米面也不等于完全不吃碳水。中国人根本无需担心碳水不够的问题，饮食结构碳水已经够多了。
这肯定是瞎扯，中国面条杂粮为主的省，高考考得可不差
Mac and cheese 里cheese 只有很少的量。
孩子主食还是要换着吃。大米里砷含量一直个问题。有专家建议米煮沸后捞出来再加入清水煮最好。
嗯嗯，碳化利于大脑，但是也长大肚子。所以坐办公室的脑力劳动者都大肚子，makes sense?
再说一遍，正确的做法不是因为碳化对大脑好就开始使劲儿吃碳化，是要少、动、脑，多、动、体。
能量守恒...摄入的能量太多,消耗的太少,再怎么生酮也减不下去.
我儿子小时候标准一餐就是米饭鸡蛋，不是我们不給他换花样，他吃什麽菜里面都得有鸡蛋。
你这个说法有点意思。我家有个邻居白人孩子，每次来我家都指定要吃白饭（只要白饭）。是个有点自闭的孩子，对食物很挑剔。不知道为啥，就喜欢吃一碗白饭。我就奇怪了，他大脑里的那一部分要求他吃白饭了。然后说她妈的白饭不好吃。她妈来问我：你的白饭有啥菜谱秘方吗？你用啥米？我只好跟她妈说试试去买个印响电饭锅。
我用的是间歇性断食法，一天只吃一顿，这一顿什么都可以吃的，包括点心甜食，只要总量不超过自己设定的热量值就可以，就算不运动都可以瘦的。我已经坚持两个多月了，目前瘦了14磅，我蛋黄酥瑞士卷粽子这些都吃，就是吃的量少，并且只在那一顿饭里吃，其它时间除了喝水什么也不吃。
是这个道理，还是饮食均衡，每种都有限制的摄入比较好。以前就感觉到了，不吃碳水脑子都转不起来
糖分不是大脑的养料，能量才是。
原来如此，怪不得我家小娃特别crave碳水，其实他也爱吃脂肪
你的化学没学好啊！
类似大饼包油条？ 超级香啊！
缺碳水化合物
哈哈，你去看看Ken Berry的video，从keto改carnivore以后，渣质视频都看到他皮肤状态变年轻了
大脑发育需要脂肪！现在人一般饮食结构里碳水已经够多了，不用再“多吃”了。平时说零碳水只是尽量少的概念，很多蔬菜都碳水含量不低。人类开始转变为农耕社会后，食物多样性是大大降低，身体吸取的营养成分也单一很多。爱吃糖爱碳水你身体不抗议当然不关别人的事
这说的其实跟很多人早上不喝咖啡就不能开始一天是一样的，习惯
我家儿医也是说的大脑发育要脂肪。。。。我查到的paper也是2岁之前，儿童热量摄入、至少50%需要是脂肪，才能保证大脑发育，所以才有母乳要油大发黄的好，孩子也要喝全脂奶的说法。到了2岁之后，可以下降到30%脂肪摄入，这是为了心脏健康。可能儿医也是不同流派吧。我还是相信要多吃鱼聪明，少吃主食。
我觉得是你大脑有一部分没用到。。。
这个比例是对头的。我上次为了医疗保险打折，看了一个营养师就是说这个比例。还强调土豆不是蔬菜，嘿嘿。当时一改我对营养师的偏见。我一直听到的都是极端的生酮饮食啥的例子，觉得营养师都瞎扯淡。这个营养师我觉得好歹在说着调的东西。
这样胃真不会受不了吗？我16-8了3个月胃都
你岁数多大啊，大姨妈还来吗？我觉得应该不来了吧
其实营养师（registered dietician)都是degree读出来的，是经过正经教育的，不会主动鼓吹那些极端饮食。
说得好！
看来你对 keto 是什么根本不知道。
你这一个星期还只是在消耗糖 你都还没进入生酮状态 身体疲软也正常 这叫keto flu 过了这个阶段都好了
是的 大众对吪众取宠的东西趋之若鹜。
现在人类因为吃得太好了，就是需要加强耗能而不是需要加强摄入吸收，谈任何理论的时候要基于现实的基础上。
简直胡扯。人类自古以来都是以肉为主食的。只是近代开始才开始摄入碳水，
LZ就算是转贴赚分能不能走点心？毕竟贴如其人。