Tofu led to stones

Doctors at a hospital in Dongyang, China, removed 420 kidney stones from a single patient in June.

One of the surgeons told reporters that a soy-heavy diet of tofu was probably to blame.

According to the Guinness Book of World Records, the count for the most number of stones removed from one kidney during surgery — in India in 2009 in a three-hour operation — is 172,155.