week4: can we change our dopamine levels ourselves?

a healthy diet, qi gong, exercise, massage, all can help raise dopamine levels. getting someone to make these changes and wait for noticeable effects is the difficult part. i've been trying to get my brother to change for a while. he doesn't want meds, but yet he drinks coffee everyday, then at least 3 sodas, smokes cigarettes, and eats a lot of processed food. he finds it hard to believe that making those changes will do anything positive for him, and since he won't try, he won't find out.