Person consumes cow dung powder and dies

A woman consumes cow dung powder and dies on the way to the hospital. She did this as her husband found that she had drawn Rs 50,000/- from his bank account using his ATM card without his knowledge and came to know later. 

http://timesofindia.indiatimes.com/city/coimbatore/Wife-who-defrauds-husband-kills-self/articleshow/13577962.cms

http://lite.epaper.timesofindia.com/getpage.aspx?pageid=9&pagesize=&edid=&edlabel=TOIH&mydateHid=28-05-2012&pubname=&edname=&publabel=TOI

I am unable to find the words of consuming cow dung powder in the above links, but in print version it is mentioned.  Myself  and my friends too are totally surprised that cow dung consumption can cause death. We tried to find the reason unsuccessfully. Now, we have to keep cautioning the persons about possible contamination of food with cow dung also to avoid illness/deaths.