Your long time friend, that you claim is in denial. There are other possibilities than depression being the root of your friends problem. For example, a man having low testorone will have the exact same systoms as someone suffering from cronic depression. I too was mis-dianosed. Doctor's had been precribing me multible anti depressant. But it was all in vain. My depression was not actually depression after all, it turned out I was very low on testorone. This could be a factor, usually this occurs in men over 40. So not sure how old your friend is, but keep in mind, your friend may be correct. I would suggest you get this friend on a few supplements, and a proper diet. I found these last two to be most beneficial in my own life.