Treatment is important since without it bipolar illness can become worse as one ages. With it, one might get better over the years as one mellows.

A few people are able to do without medications, but they have probably a very mild
case and have been able to make changes in their diets over the years that have
alleviated a lot of the mood swings. It's unusual, in my view, for one to recover
completely, although it is not unheard of.