I am a 23AndMe customer and got an update notice of new findings a few months back. One genetic marker indicated that I might be 10x more likely than average t

I am a 23AndMe customer and got an update notice of new findings a few months back. One genetic marker indicated that I might be 10x more likely than average to have Selective IgA Deficiency: http://en.wikipedia.org/wiki/Selective_immunoglobulin_A_deficiency http://en.wikipedia.org/wiki/Selective_immunoglobulin_A_defi... Since college, I have had several serious infections which, when considered individually, are within the realm of random possibility. Pneumonia as a college freshman, an infection post wisdom teeth removal at age 23, several root canals, etc. However, when considered as a group, the existence of some underlying issue seems likely. My primary care physician ordered a screening test. Unfortunately, it came back negative. I was disappointed because, with such an explanation, I would have a greater understanding of how to take precautions in the future (proactive antibiotics before dental work, etc.).