Does anybody know of any scientific evidence that there's a link between vegetarian diet and poor memory?!

Does anybody know of any scientific evidence that there's a link between vegetarian diet and poor memory?

I am not a vegetarian and I have nothing against being a vegetarian but I have two close vegetarian friends who have exceedingly bad memories. I suspect the lack of protein in their diets is negatively effecting brain activity. Can anybody suggest where I find hard facts on this? Or should I consult a professional?

2 days ago
According to Wikipedia, "Although Einstein had long been sympathetic to the notion of vegetarianism, it was only near the start of 1954 that he adopted a strict vegetarian diet." Einstein died in 1955. I'm not saying vegetarians are dumb, just have noticeably bad memories.

If you're genuinely concerned for your friends, you can certainly ask a professional-- a dietician for instance, but I'd be amazed & suspicious if an informed person were to tell you that a *healthy* vegetarian diet can cause memory issues.
Are these 2 friends the *only* vegetarians that you are accquainted with? If so, it is an interesting coincidence that both of them have memory problems-- unless they both have similar unhealthy diets, or drink a lot of alcohol etc.
*Most* of the vegetarians I know, including ppl who have never eaten meat, have fine memories. As you're probably aware, lots of things can effect one's memory, including substance abuse, stress, certain diseases and others. Further, vegetarians usually get more protein than they need.
Also, while Wikipedia can be interesting or *somewhat* somewhat useful as a reference, remember that it's not all that reliable & that ppl can post their own opinions or agendas there as 'fact.'