Hi Cam,
Thal minors have a higher than normal turnover of red blood cells, RBC's due to overactive bone marrow and production of ineffective RBC's, and this causes a high bilirubin level as the RBC's break down. This can lead to gallstones. Your bilirubin will most likely always be high, as it is in alpha and beta thal minor. It may be reduced with supplementing certain nutrients, like folate, B complex, natural vitamin E and magnesium, as they help build and protect RBC's, but the bilirubin will remain higher than normal. Diet has a lot to do with kidney stones, as you are aware. Make sure you're staying well hydrated. Curcumin is fantastic. I've replaced ibuprofen with turmeric and black pepper capsules for aches and pains and have been very happy with the results. It's also a great antioxidant, which is also a help maintaining healthy RBC's. This is something you can safely take daily.
Thalassemia is the cause of high bilirubin and many thal minors experience a variety of symptoms, and the symptoms can become more bothersome with age. Diet and nutrition are very important to the quality of life of thal minors. The overactive bone marrow and premature breakdown of RBC's cause a depletion of many nutrients. Doctors overlook this fact and overlook the importance of replacing these nutrients. As you've seen with curcumin, you can make a noticeable difference by helping yourself. We have an entire board dedicated to this topic because it is so important. You can find many ideas and recommendations for helping yourself there.