设万维读者为首页 广告服务 技术服务 联系我们 关于万维
简体 繁体 手机版
分类广告
版主:Yiyi11
万维读者网 > 健康生活 > 帖子
Blood types, immune systems and personality
送交者: jingchen 2020年02月11日11:55:39 于 [健康生活] 发送悄悄话

Blood types, immune systems and personality

Many of us are fascinated by blood types. Do they affect our health? Do they affect our personality? Do they affect our choice of career?

There are many methods to classify blood groups. The principal method is to classify blood types into ABO groups. There are four main blood types, A, B, AB and O. From the naming system, you might suspect there is some structure about blood types. This is indeed the case.

People with type A and B can receive blood from people with the same blood type or type O. People with type AB can receive blood from anyone. People with type O can receive blood only from people with type O. Why is that?

This has something to do with our immune systems. Our bodies, and the bodies of any other life, are full of nutrients. Microbes want to suck nutrients from us. Our immune systems try to detect and destroy these invading microbes. At the same time, our immune systems need to recognize our own cells and avoiding attacking them. If microbes evolve similar structures to our own cells, our immune systems will not develop highly specific and highly effective antibodies to attack these invaders. However, our immune systems do have less specific and less effective cells to attack these invaders.

On the surface of blood cells of each type, there are type  specific protein molecules. Type A has A type molecules.  Type B has B type molecules.  Type AB has both A type and B type molecules.  Type O has none of these type specific molecules. As a result, people with blood type O developed type A and type B antibodies, people with blood type AB has neither type A nor type B antibodies, people with blood type A or B are in between.

Type A antibodies are hypothesized to originate from immune response towards flu virus. Type B antibodies are hypothesized to originate from immune response towards Gram-negative bacteria, such as E. coli. These research may suggest people with blood type A are more susceptible to flu infection while people with blood type B are more susceptible to disease from Gram-negative bacteria.

People with blood type O have both type A and B antibodies. With better immune protection, why these O type people don't replace all other people? This is because the specific molecules from type A and B perform useful functions for us. Statistics shows that O type people are more susceptible to cholera and some other diseases. The mechanism for that is not very clear.

From the above discussion, people with type O blood seem to have the most extensive immune systems while people with blood type AB have the most restricted immune systems. This might leads to certain personality traits. People with blood type O may be more outgoing while people with blood type AB may be more introvert on average. 

An empirical investigation can determine whether these theoretical deductions are valid. 

If some of the observations are true, they can be applied to our health cares. For example, people with type A blood should take more precaution against flu while people with blood type B should take more precaution against Gram-negative bacteria infection.

We may also apply our knowledge to career choices. For example, people with blood type O may be more capable in people oriented works while people with blood type AB may be more capable with technical works. These are just wild speculations that should be modified with more empirical and theoretical investigations.


0%(0)
0%(0)
标 题 (必选项):
内 容 (选填项):
实用资讯
北美最全的折扣机票网站
贝佳药业美国专利【骨精华】消关节痛、骨刺、五十肩【心血通】改善心绞痛

一周点击热帖 更多>>
一周回复热帖
历史上的今天:回复热帖
2019: 美國總統川普談杜絕HIV
2018: “心灵法门”在香港非法敛财2亿被举报
2017: 缘分真奇妙 消防员接生女婴两天后成养父
2017: 6种喝牛奶方式如服毒
2016: 权威建议:保护关节 & 肩颈
2016: 吃什么容易胖,吃什么会瘦!胖瘦只在一
2015: 5个坏习惯正在夺你性命(图)
2015: 看手能辨好多病