The latest posts on this forum are about the alkaline diet, which is probably best since it can get your immune system in balance again. You can't just try it for a day. You have to give it at least a month to reduce acid in your body. There are others on this board who have already tried the alkaline diet so they know more about it. But I also need collagen to repair damage from my autoimmune disorder. My body should stop attacking my collagen once my immune system is functioning properly again without all the acid. Even if you don't have my collagen problem, you can help your immune system by lowering the acid in your body.
If you try the alkaline diet and it doesn't work for you, then you may have a different cause. However, this diet can still help others. If you can't understand this information, then ask a doctor to help you understand.