I am 29 years. I got my complete health check done few months ago. Important observation in the reports - 1. High total bilirubin level 2. Low MCH 3. Extremely low Vitamin D 4. Extremely low Vitamin B12 I have been taking supplements for D and B12. After I did some reading around this, I could relate my frequent fatigue with the observations found in report. I always feel tired and exhausted. Just wanted to ask how high bilirubin and low MCH is related? My doctor said it could be because of low B12/D levels. So he wanted to fix vitamin deficiency. I am just curious if we are missing anything critical here.