Can there be any natural way to treat add in adults?

Yes: There are multiple natural ways to help manage add. Cognitive behavioral therapy, adhd support groups, life coaches, exercise, adequate diet, meditation, get plenty of sleep and taking regular, short, mental breaks. Some supplements may be beneficial like omega 3 fatty acids. This link may be helpful for you: http://www.Helpguide.Org/mental/adhd_add_adult_strategies.Htm.