I have recently gone through personalized health check up and the Heart and lungs are normal. Still, why do I get pains in my left side of my chest sometimes which makes me feel uncomfortable or make me think whether it is something serious issue with my Heart. I discussed the same with Doctor and I was advised to check Vitamin D3 and B12 levels. After getting the reports, I saw that my Vitamin D3 levels are Insufficient range and Vitamin B12 levels are in normal range. The chest pain which is causing could be because of Insufficient levels of Vitamin D3? If yes, then what is the role of Vitamin D3 on Chest related pains? Can you help me understand this. Thanks in advance.