为什么主流医学界对维生素C对免疫系统有支持的观点多持保留意见?是有利益冲突吗?

6
6degrees
楼主 (文学城)

这是ChatGPT的回答:

主流医学界并不持保留意见,认为维生素C对免疫系统有一定的支持作用。事实上,维生素C是一种必需营养素,对人体的健康起着重要作用。

然而,尽管有些研究表明维生素C可以增强免疫系统的功能,但这些研究结果并不一致,也存在一些争议。目前,主流医学界认为维生素C可能有一定的支持作用,但并不是治疗各种疾病的万能药。

需要指出的是,主流医学界强调的是以证据为基础的医学实践,也就是治疗方法必须经过科学实验和严格的评估。虽然一些替代疗法,包括高剂量维生素C疗法,可能表现出良好的疗效,但在成为主流治疗方法之前,它们必须经过与其他治疗方法同样的严格测试和评估。

因此,主流医学界不持保留意见的观点,并不是因为利益冲突,而是因为需要依据严格的科学标准评估治疗方法的安全性和有效性。


这是Microsoft new Bing (with ChatGPT)的回答:

根据我找到的信息,主流医学界对维生素C对免疫系统有支持的观点多持保留意见的原因可能有以下几点:

 

- 维生素C的研究结果并不一致,有些研究显示维生素C可以增强免疫力,有些研究显示维生素C没有明显效果或者副作用。
- 维生素C是一种水溶性维生素,人体不能储存过量的维生素C,多余的部分会随尿液排出。因此,补充过量的维生素C可能是浪费或者有害的。
- 维生素C并不能直接杀死病毒或者治愈感染,它只能在一定程度上帮助免疫系统抵抗外来侵袭。因此,单纯依赖维生素C来预防或治疗感染是不科学的。
- 维生素C可能和一些药物发生相互作用,影响药物的效果或者引起不良反应。例如,维生素C可能降低抗凝血药物、降压药物、抗癌药物等的效果。


至于是否存在利益冲突,这个问题很难回答。一方面,可能有一些制药公司或者医疗机构不愿意看到廉价而普遍的维生素C影响他们的利润;另一方面,也可能有一些营养品公司或者健康网站为了推销自己的产品而夸大维生素C的功效。

总之,在使用任何营养补充品之前,请咨询您的医生,并按照建议用量服用。过量服用任何东西都可能带来风险。

 

Question: What is the reason for bias against Vitamin C in Mainstream Medicine? Is it due to the fact or conflict of interests?

Answer from ChatGPT:

There is no bias against Vitamin C in mainstream medicine. In fact, Vitamin C is recognized as an essential nutrient by the medical community and is widely used to prevent and treat scurvy, a disease caused by Vitamin C deficiency.

There is some controversy surrounding the use of Vitamin C as a treatment for various health conditions, such as cancer and the common cold. While some studies have shown promising results, others have been inconclusive or have not shown a significant benefit.

It is important to note that mainstream medicine relies on evidence-based practice, meaning that treatments are recommended based on scientific evidence and rigorous testing. While some alternative therapies, including high-dose Vitamin C therapy, may show promise, they must go through the same rigorous testing and evaluation as mainstream treatments before they can be widely recommended by the medical community.

Therefore, any perceived bias against Vitamin C in mainstream medicine is not due to conflict of interest, but rather a result of the rigorous standards for evaluating the safety and effectiveness of treatments.

 

Bias against Vitamin C in Mainstream Medicine: Examples from Trials of Vitamin C for Infections

Abstract

Evidence has shown unambiguously that, in certain contexts, vitamin C is effective against the common cold. However, in mainstream medicine, the views on vitamin C and infections have been determined by eminence-based medicine rather than evidence-based medicine. The rejection of the demonstrated benefits of vitamin C is largely explained by three papers published in 1975—two published in JAMA and one in the American Journal of Medicine—all of which have been standard citations in textbooks of medicine and nutrition and in nutritional recommendations. Two of the papers were authored by Thomas Chalmers, an influential expert in clinical trials, and the third was authored by Paul Meier, a famous medical statistician. In this paper, we summarize several flaws in the three papers. In addition, we describe problems with two recent randomized trial reports published in JAMA which were presented in a way that misled readers. We also discuss shortcomings in three recent JAMA editorials on vitamin C. While most of our examples are from JAMA, it is not the only journal with apparent bias against vitamin C, but it illustrates the general views in mainstream medicine. We also consider potential explanations for the widespread bias against vitamin C.

Conclusions

In this review, we have demonstrated significant bias in many influential papers on vitamin C. We have shown that many influential papers have been uncritically cited in textbooks and reviews, assuming that they are scientifically valid, when in fact many of them have serious flaws. Influential authors have referred to the papers without undertaking any critical appraisal themselves. We have proposed conceptual explanations for the long-lasting and deep bias against vitamin C. This bias is unfortunate because vitamin C is safe and inexpensive, and therefore even reasonably small treatment effects are well worth taking into consideration.

 

 

有点儿闲
维生素C对免疫系统是否有支持作用,在于使用维生素C的个体的身体状况,不能一概而论
6
6degrees
至少都有可能得到支持,没坏处,是吧?
有点儿闲
不是。寒证病人服用维生素C不会支持其免疫系统,还有可能会降低其免疫力
6
6degrees
这是什么病?为什么VC不能支持免疫系统?
5
5181
Vc太便宜了,连卖保健品的都嫌它便宜而开发脂质维C.自己吃了感觉好才是最有效.
6
6degrees
你这是说利益驱使了。但是不是如此?
5
5181
谁给钱做Vc实验?动物实验,仪器设备,人员工资...
6
6degrees
国家,出于对大众的利益。
5
5181
经济不好时科研经费也会压缩.
6
6degrees
但如果这么便宜的维生素C,可以取代昂贵的医疗设备和药物,社会的运行成本会极大的降低,对整个社会都是有益的。
A
AprilMei
怎么可以如此天真。那么多利益集团怎么发财?
M
Michelangelo
所以我吃1000的VC会尿频。 今天看到有人长期吃大剂量,搞到肾衰:(
6
6degrees
你说有人长期吃大剂量,是天天吃吗?多大剂量?
湖西
VC和感冒的剂量反应关系在 6-8 克/天时呈线性关系,更高的剂量可能会导致感冒进一步缩短。
P
Peaceview
我听一位医生说:长期每天服 VC1000或更高剂量会得肾结石!
湖西
有人建议VC 剂量应超过15克/天才能最好地治疗感冒,但迄今在随机试验中的最高剂量要低得多,这也是研究不一致的一个原因。
6
6degrees
如果不是要针对或是防御什么病症,没必要每天大剂量服用VC吧?
6
6degrees
需要这么大剂量?除非是静脉注射,如果是口服水溶性VC,这么大剂量口服都被排泄掉了,也对肾脏有影响吧?
P
Peaceview
应该没必要 !
湖西
人和人不同,得自己掂量。我感冒时每天6克,连吃几天没感觉有副作用。
6
6degrees
多年前在新西兰,以后一则和VC有关的事情上过电视的。

NZ Farmer Beats Swine Flu With Vitamin C

 

6
6degrees
每天6克一般的水溶性VC?
湖西
是,Costco的一粒1000毫克VC那种,一天吃6粒。
6
6degrees
这样服用吸收不了吧?而且会对肾脏造成很大负担吧?
古树羽音
真不明白,为什么不去摄取新鲜的瓜果蔬菜?!再好的营养药品也是药品,是给营养失调并不能保证自然从食品得到的老弱病残者。
6
6degrees
日常VC需求确实通过正常健康饮食就够了,换句话说,小剂量的VC没必要通过补品来补充。但预防或治愈病情的大剂量VC,

单靠食物摄取是达不到的。比如5克以上的VC,靠食物天然VC是根本做不到的。

F
FollowNature
俺低剂量每天0.3克至一克,已经服用了三年。对于缓解牙周病有好处。另外这些年也没生过任何病。只有胃酸分泌过多,可能是维C的副作用