Yes, your very low VitaminD level is a very likely cause of the persistent breast pain, and the reports you’ve shared are actually reassuring.
Your mammogram result being BIRADS 1 means the breasts are completely normal, with no lump, no cyst, and no signs of cancer. When breast imaging is normal and pain persists, the cause is usually non-structural and hormonal or nutritional. A
Vitamin D level of 5.5 ng/mL is severely deficient, and such low levels are well known to cause breast pain, chest wall pain, muscle tenderness, and generalized body aches, especially in women. Vitamin D deficiency can make breast tissue and the surrounding muscles more sensitive, leading to ongoing pain even when scans are normal.
Your
Vitamin B12 level of 240 pg/mL is borderline low, which may contribute to nerve sensitivity and discomfort, but it is not the primary cause. The main contributor here is the severe Vitamin D deficiency. This type of breast pain is called mastalgia due to nutritional deficiency, and it is benign and reversible.
Next Steps
With proper
Vitamin D replacement, breast pain usually improves gradually over 4–8 weeks and no further breast investigations are needed at this stage unless new symptoms like a lump, nipple discharge, or skin changes appear.
Health Tips
Do consult any surgeon in case your pain, swelling or discomfort increases rapidly.
Good luck!