2. What is the best vitamin for concentration and memory?

2. 哪种维生素最能提高注意力和记忆力？

Vitamin B12 is thought to help you with memory and concentration by maintaining your myelin sheath's structure and function, which is a substance that is essential for the proper functioning of the nervous system. Without vitamin B12, this breaks down, and it causes brain cells responsible for cognition to no longer function properly. Long-term vitamin B12 deficiency can cause memory loss and dementia.

维生素B12被认为能提高记忆力和注意力，因为维生素B12能维持髓鞘的结构和功能。髓鞘是神经系统正常运作所必需的物质。如果没有维生素B12，髓鞘就会分解，从而导致负责认知的脑细胞不再正常运作。长期缺乏维生素B12将导致记忆力减退和痴呆。

3. Associate the memory with your environment

3. 将记忆与环境联系起来

So if, for example, a joke is learned in the presence of a particular smell, that same aroma may cue the memory for that joke.

比如，你在特定的气味状态下学到了一个笑话，那么同样的气味可能会让你想起有关那个笑话的记忆。

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