Vitamin D boosts breast cancer treatment success by 79% | ScienceDaily
A new study has found that women with low vitamin D levels may experience more pain after breast cancer surgery and may need higher doses of opioid painkillers during recovery.
Researchers say vitamin D could play an important role in how the body handles pain and inflammation. The findings were published in the medical journal BMJ Group’s Regional Anesthesia & Pain Medicine.
What Did the Study Find?
The research showed that breast cancer patients with vitamin D deficiency were nearly three times more likely to suffer moderate to severe pain after mastectomy surgery compared to patients with healthy vitamin D levels.
These patients also needed significantly more opioid medication, including fentanyl during surgery and tramadol afterward, to manage their pain.
Doctors believe vitamin D may help regulate pain because of its effects on the immune system and inflammation levels in the body.
How the Study Was Conducted
The study took place at Fayoum University Hospital in Egypt between September 2024 and April 2025.
Researchers followed 184 women preparing for breast cancer surgery to remove one breast. Half of the women had low vitamin D levels, while the other half had normal levels.
Importantly, the doctors and nurses treating the patients did not know who had vitamin D deficiency. All patients received the same standard care and pain management treatment.
Pain levels were checked several times during the first 24 hours after surgery.
Patients With Low Vitamin D Needed More Painkillers
Women with vitamin D deficiency needed noticeably more opioid medication after surgery.
On average:
- They received slightly more fentanyl during surgery.
- They used about 112 mg more tramadol after surgery than patients with normal vitamin D levels.
The study also found that nausea and vomiting after surgery were more common among patients with low vitamin D.
Why This Matters
Opioid medications can help control pain, but they also come with risks such as:
- Nausea and vomiting
- Drowsiness and confusion
- Dependence and addiction
Researchers suggest that correcting vitamin D deficiency before surgery could become a simple and affordable way to improve recovery and reduce opioid use in breast cancer patients.
Important Limitations of the Study
The researchers noted that the study does not prove vitamin D deficiency directly causes more pain. Since it was conducted at a single hospital and was observational in nature, more large-scale studies are needed.
The study also did not measure factors like anxiety, sleep problems, cancer stage, or inflammation markers, which may also affect pain levels after surgery.
Still, the researchers concluded that low vitamin D levels were clearly linked to higher pain scores and greater opioid use after breast cancer surgery.
Final Takeaway
This study highlights a possible connection between vitamin D deficiency and painful recovery after breast cancer surgery. While more research is needed, experts believe checking and improving vitamin D levels before surgery may help patients recover more comfortably and reduce the need for strong opioid medications.
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