Nothing specifically directly to do with Vitamin D
A few old charts from http://www.blackhealthcare.com/BHC/HealthStatistics/HealthStatistics1.asp
From CDC http://www.cdc.gov/Features/dsObesityAdults/
See also VitaminDWiki
- Overview Dark Skin and Vitamin D
- Differences in black and non-black mortality and vitamin D – Oct 2012