February 17, 2016
As highlighted in our newsletter at the beginning of the month, February is American Heart Month. One of the major risk factors for cardiovascular disease is diabetes – a disease known to be associated with vitamin D status. While the association has been documented for many years, including a 2008 analysis showing a connection to latitude, we were recently able to use your D*action data to help isolate the range of vitamin D status that appears to be most closely associated with type 2 diabetes!
The GrassrootsHealth diabetes paper, published using YOUR Data, shows a full 60% lower rate of incidence of type 2 diabetes in the D*action group with a median serum level of 41 ng/ml vs. a median of 22 ng/ml from a group representing national health status (NHANES). Another very significant finding was that the data were consistent with previous data we have published showing a sigmoidal (S-shaped) response curve with the serum level, and not a straight line:
- there is a flat (no) response for people under 10 ng/ml
- between 10 ng/ml and 30-35 ng/ml, there is a very definite positive clinical response and
- no additional effect above 30-35 ng/ml
Learn more about the diabetes data and paper, system-specific nutrient response curves and what they mean to vitamin D research, and another great participant testimonial.