Reviewing studies of both vitamin B6 intake and blood levels, Swedish scientists found a 20 percent reduction in colorectal cancer risk between people with most B6 and those with the least.
The research team found 9 prospective studies of B6 intake and 4 of B6 blood levels. Pooling them, they found a relative risk of colon, rectal, or colorectal cancer that was .80 — or a 20 percent reduction in risk — between highest and lowest categories of either intake or blood levels.
The Stockholm team, led by Susanna C. Larsson, PhD, concluded,
Vitamin B6 intake and blood PLP levels were inversely associated with the risk of colorectal cancer in this meta-analysis.