我们每个人家都会买些维生素和各种补剂。。。包括回国礼品/
可是，说实话，我吃过各种各种价位的维生素，没有给我印象深刻的，甚至立竿见影的效果。PS：倒是每天早上一个BIO的鸡蛋还有猕猴桃猕猴桃，给我的效果明显。我经常怀疑， 各种BIO药店各大柜的健康补剂supplements，
是不是厂商/市场策略，我们叫的”智商税“？
今天给我推了一个视频，讲到这篇广为引用的Journal paper:
Daily Multivitamin May Improve Cognition and Possibly Protect Against Decline
September 14, 2022
论文发表在：https://alz-journals.onlinelibrary.wile ... dad2.12404
Resutls:
Results
A total of 2262 participants were enrolled (mean age = 73y; 60% women; 89% non-Hispanic White), and 92% completed the baseline and at least one annual assessment. Cocoa extract had no effect on global cognition (mean z-score = 0.03, 95% CI: -0.02 to 0.08; P = .28). Daily MVM supplementation, relative to placebo, resulted in a statistically significant benefit on global cognition (mean z = 0.07, 95% CI 0.02 to 0.12; P = .007), and this effect was most pronounced in participants with a history of cardiovascular disease (no history: 0.06, 95% CI 0.01 to 0.11; history: 0.14, 95% CI -0.02 to 0.31; interaction, nominal P = .01). Multivitamin-mineral benefits were also observed for memory and executive function. The cocoa extract by MVM group interaction was not significant for any of the cognitive composites.
这个样本空间太小，太窄了吧
这会不会是在给vitamin厂商站台？
