Depression can be related to deficiencies, for sure. The only way to find out if it has any affect for you is to experiment.
You say you have tried diets, but I wonder if you mean that you have tried specific diets for this or that? If so, then I would like to encourage you to try something else. Do experimentation to find out what the healthiest diet is for
you.
The reason "diets" often do not work is that people are not one-size-fits-all, most especially when it comes to FM. What works for one person doesn't work for another.
Same thing with exercise. You say you have tried it, but have you done all of the experimentation needed to find out what would really work for you? Some form of daily exercise is guaranteed to help. It just depends on what kind, what will work for you. The best kind is something you like to do and don't have to even think of as "getting my exercise".
I am saying this because I strongly believe that if a person with FM works diligently to discover the combination of diet, supplements, exercise, and mental wellness techniques that work for them, the pain can be lessened and can also come less frequently. I believe this because I have done it. Gone from being in bed in pain and taking tons of pain medication every day to living a close to normal sort of life, all without medication. So have many, many other people using my ideas and others that they have developed on their own.
I am a strong advocate for people doing this work.
If you have not already I strongly recommend you read the advice post I wrote and start now to implement some of those strategies and changes. Most important, as I said, is to experiment in order to find what works for you. No one can tell you what will work, but my post has so many ideas that something there is sure to help.
I am not a doctor or anything, just a person who has lived with fibromyalgia for several years now and has done a lot of research and trial and error experimentation. What follows is just basics. There are a lot of variations. You will find your own versions of everything I say, as this is not a...
www.fibromyalgiaforums.org