In Which I Correct an Error in My "Bring Your Genes to Cal" Post of 8/29/2010

Dean Mark Schissel makes me smarter by emailing to say that I am working off of wrong and out-of-date information. It looks as though at least one of my fears is groundless: insurance companies are not likely take genetic information about folic acid metabolism and use it to deny coverage because women with the genetic marker are more likely to have babies with neural tube defects like spina bifida. The apparent association found appears to be a “false positive”:

[Because:] the MTHFR...