Someone just posted about talc containing asbestos fiber in the old days...... 
that got me to thinking.

I've avoided all baby powders that include talc for years due to an article I 
read in Science News way back when that said that the use of talc causes lung 
scarring at any age.   So, that leaves baby powder made of corn starch.

Now, my wife (perhaps all women?) is really into using baby powder.  A pain in 
the butt as it coats everything in the bathroom.    Now I'm thinking, well 
maybe she is breathing in the corn starch into her lungs.  Not a problem for 
most folks, but as I've posted recently, any time she consumes food or drink 
that has corn starch, corn oil, corn syrup etc. she has severe migraines for 
about 3 days.   

On her 'good' days, she has just regular migraines.   Her last day without a 
migraine was in 2006.  Not much of a life.

Now.... what if using the cornstarch style of baby powder is causing the 
ongoing migraines?

Who knows?