Don't smoke, rarely go outside, because we are currently living in the desert and it is very hot. Around the time these started forming, I also didn't spend anymore time outdoors than the average urbanite. I am not a sports/outdoors kind of person and not a tanner.
I take anywhere from 2000-4000 mg. of C a day.
I actually tested low for zinc at one time and was supplementing with is, but that was just earlier this year. If you get white spots on your fingernails, that is often indicative of a zinc deficiency. I always have white spots.
I think anyone who has candida, parasites, etc. has an autoimmune problem, because if your immune system were working properly, you wouldn't get sick, or candida or parasites. You may get them, but if your immune system is healthy, they won't bother you.
My copper has been tested in the past and has always been in the normal range.