Well, I think if a person has a challenging bipolar illness, then it's hard to control without medications. However, low stress lifestyle and de-escalation by avoiding situations that fuel mania and anxiety, are the best bet. Healthful diet and coping skills can also be helpful, but are no guarantee for curbing or preventing episodes. I use all mentioned, in addition to my medications, to manage my bipolar illness.

Some people take fish oil. In my case, that does little or nothing, but it can't hurt. If it was a miracle worker, which it apparently isn't, we'd all be taking it or chowing down on fish and grains that contain Omega-3's. At least they don't cause side effects beyond maybe fish flavored burps or other digestive issues, in some people.