According to Official Guinness Records,
Rosemary Jacobs (b. 23 August 1942 in USA) has been affected by argyria from 1956 a couple of years after she started taking nasal drops containing colloidal silver (CSP). Argyria is a condition caused by improper exposure to chemical forms of the element silver causing the skin to developed an irreversible grey tinge.
A skin biopsy in 1965 revealed a multitude of silver particles embedded deep beneath her epidermis. Now, after years of verbal abuse, cruel remarks and severe skin treatments, Mrs Jacobs is determined to raise awareness of the dangers of taking supplements and medicines containing silver. The retired Spanish teacher believes there has been an increase in dietary supplements containing CSP and says they should be banned or have warning labels. In the 1970's she underwent agonising skin dermabrasion where the top layer of skin is removed, leaving it raw. Her face healed but she was left with a pink and blotchy complexion. There are a few dozen other cases of argyria worldwide. The most famous is Paul Karason, from California, known as the Blue Man, and U.S Libertarian candidate Stan Jones who gained a more greyish hue.
For a complete list of 2011 records, please visit 2011 Guinness Records in United States.