If you are only going to focus one one of the alleged benefits of turmeric, and the most recently acclaimed and most difficult to verify at that, the article is worthless.
I very much doubt whether Turmeric can improve one’s mood but then I’m a generally contented person even if my contributions to Medium seem to be cynical and world weary, (it’s just an act) so I would have no interest in any mood enhancer beyond a bottle of good red wine.
As for memory improvement, well there’s nothing wrong with my memory either, so I could not put turmeric to the test on that either. A number of well set up studies have found curcumin, the active ingedient in the spices turmeric and cumin is an anti inflammatory and anti oxidant.
It has been proved to reduce risk of heart disease and of course it is well known that anti oxidants are effective in preventing the development of cancer.
So overall I’d say turmeric or cumin in concentrated form as a supplement has a number of potential benefits. As for helping slow the development of dementia, the jury is still out on that one, there are studies which say it is not effective and studies that say it is. But added to chickenfeed it does give egg yolks an appetizingly rich orange colour. :-)