Some studies on, for example, depression suggest that favoring good oils (olive oil, Mediterranean diet) reduces brain inflammation.

You can do a search on such things. You will get a lot of search results that would bomb on HN ("mommy bloggers," Gwenyth Paltrow's Goop, other wellness resources), but there are actual studies on diet and inflammation that can be found as well.

Oils and alkaline diet/alkaline minerals (calcium, magnesium) are places you could start an internet search. A food journal can also be a useful tool.