The Role of Vitamin D in Breast Cancer Prevention
Author Information
Author(s): Mead M. Nathaniel, Julia Knight, Jacques Brisson, Reinhold Vieth
Primary Institution: Mount Sinai Hospital, Toronto
Hypothesis
Does vitamin D exposure during adolescence reduce breast cancer risk later in life?
Conclusion
Vitamin D-related exposures during adolescence may significantly reduce breast cancer risk.
Supporting Evidence
- More frequent sun exposure during adolescence was associated with a 35% reduction in breast cancer risk.
- Lower risk was linked to cod liver oil intake and drinking at least 10 glasses of milk per week.
- A study found that women diagnosed in summer had a 15-25% better prognosis than those diagnosed in winter.
- Observational studies suggest a 50% or more reduction in cancer risk with high vitamin D intake.
Takeaway
Getting enough sunshine and vitamin D when you're young can help lower the chances of getting breast cancer when you're older.
Methodology
Case-control study involving interviews about vitamin D-related exposures among women with breast cancer and healthy controls.
Potential Biases
Potential recall bias in self-reported sun exposure and dietary habits.
Limitations
The study may not account for all factors influencing breast cancer risk.
Participant Demographics
972 women with newly diagnosed invasive breast cancer and 1,135 healthy controls.
Statistical Information
Statistical Significance
p<0.05
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